Suunto Core 2 All Black Outdoor ABC Watch
Description
Suunto Core 2 All Black Outdoor ABC Watch
The Suunto Core 2 All Black is a classic ABC outdoor watch developed for hiking, trekking, field work and off-grid adventures. Its altimeter, barometer and digital compass operate independently of mobile coverage, GPS and online maps, providing essential environmental and directional information wherever the route leads.
The watch monitors altitude and atmospheric pressure, displays weather trends and can issue a storm alarm when a rapid pressure drop indicates deteriorating conditions. Its offline compass includes bearing lock and magnetic declination adjustment for more accurate orientation in unfamiliar terrain.
A high-contrast 1.3-inch LED dot-matrix display is protected by Corning Gorilla Glass and offers switchable red and green backlighting. Green illumination improves general visibility in low light, while the red backlight helps preserve night vision during nocturnal field activities.
The Core 2 combines up to 15 months of battery life, a user-replaceable CR3032 battery, 10 ATM water resistance, Bluetooth connectivity and a durable All Black construction suitable for demanding everyday outdoor use.
Key Features
- Classic ABC outdoor watch
- Altimeter, barometer and digital compass
- Operates without GPS, mobile coverage or internet access
- Real-time altitude and atmospheric pressure monitoring
- Automatic altimeter/barometer profile
- Altitude difference measurement
- Weather trend indicator
- Storm alarm for rapid pressure changes
- Offline digital compass
- Bearing lock with directional guidance
- Magnetic declination adjustment
- 1.3-inch LED dot-matrix display
- Switchable red and green backlighting
- Corning Gorilla Glass
- Large, glove-friendly control buttons
- 10 ATM / 100 m water-resistance rating
- Up to 15 months of battery life in time mode
- User-replaceable CR3032 battery
- Bluetooth connection to the Suunto app
- Automatic time synchronisation
- Wireless software updates through the Suunto app
- Sunrise and sunset times
- Moon phase calendar
- Dual time display
- Step counter
- Stopwatch, countdown timer and daily alarm
- Tested according to selected MIL-STD-810 procedures
- All Black colour configuration
Classic ABC Outdoor Functionality
ABC stands for altimeter, barometer and compass. These three instruments provide the essential information required to monitor elevation, follow changing atmospheric conditions and maintain direction when travelling away from marked routes or network coverage.
Unlike a GPS smartwatch, the Core 2 does not rely on satellite positioning, downloaded maps or continuous phone connectivity for its principal outdoor functions.
Altimeter and Elevation Awareness
The barometric altimeter displays the current altitude and helps the user monitor vertical progress during climbs and descents. Its altitude-difference function compares the current reading with a selected reference point, making it easier to follow elevation gained or lost during an activity.
The specified altitude range extends from approximately -100 to 10,000 metres. For the most reliable readings, the altimeter should be calibrated using a known altitude or current sea-level pressure reference.
Barometer and Weather Monitoring
The barometer continuously monitors atmospheric pressure and displays pressure trends. This provides useful information about changing environmental conditions before visible weather changes arrive.
The storm alarm responds to rapid pressure drops that may indicate an approaching storm. It is intended to provide additional situational awareness and time to consider shelter or a change of route.
Barometric information and storm alarms cannot guarantee an accurate weather forecast. Always consider official forecasts, local observations and changing field conditions.
Automatic Altimeter and Barometer Profile
The automatic altimeter/barometer profile helps the watch distinguish between changes caused by movement in elevation and changes caused by atmospheric pressure.
Reference values should still be checked and calibrated regularly, particularly before mountain travel or whenever accurate altitude information is important.
Offline Digital Compass
The digital compass operates without GPS or mobile coverage and displays direction using magnetic north. It includes a one-degree directional scale and supports bearing lock for following a selected direction.
The specified compass accuracy is approximately 5° under suitable operating conditions. Nearby magnets, metal structures, electronic equipment and power lines may affect readings.
Bearing Lock
A selected bearing can be locked into the compass. The watch then provides directional guidance to help the user maintain the chosen heading through complex terrain or reduced visibility.
A wrist compass should be used together with a suitable map, route plan and conventional navigation skills. It should not be the sole navigation method for safety-critical travel.
Magnetic Declination Adjustment
Magnetic declination is the difference between magnetic north and geographic true north. The Core 2 allows this difference to be entered so that compass readings can be adjusted for the user’s region.
The correct declination value depends on location and changes gradually over time.
High-Visibility 1.3-Inch Display
The Core 2 features an upgraded 1.3-inch LED dot-matrix display with a clear layout designed to present essential information at a glance. According to the supplied product information, the display provides approximately 40% greater light reflectance than the previous generation.
Corning Gorilla Glass improves resistance to scratches and impacts during normal outdoor use. It is durable but not completely scratch-proof or unbreakable.
Red and Green Backlighting
- Green backlight: Provides high contrast for general outdoor use in darkness, haze and low-light conditions.
- Red backlight: Helps preserve night-adapted vision during nocturnal navigation, observation and field activities.
The backlight can be configured for activation by one button or by all buttons.
Large Outdoor-Friendly Buttons
The watch uses large physical buttons designed for straightforward operation in real outdoor conditions. Their size makes the controls easier to operate while wearing many types of gloves.
- Light / Lock: Activates the backlight or locks the controls against accidental operation
- Back: Returns to the previous display or exits a menu
- Start / Stop / Up: Starts functions and moves upwards through menus
- Mode: Changes between the main functions and settings
- Down: Moves downwards through menus and settings
Long Battery Life
The Core 2 uses a user-replaceable CR3032 3 V coin-cell battery. Battery life in time mode is rated at up to approximately 470 days or 15 months, while the supplied specification data lists a typical operating life of approximately 330 days or 11 months.
Actual battery life depends on backlight use, Bluetooth activity, environmental temperature, alarms, sensor functions and other settings. A low-battery warning indicates when replacement is approaching.
Bluetooth and Suunto App Connectivity
Bluetooth allows the watch to connect to the Suunto app while retaining independent offline operation for its essential ABC functions.
- Automatic watch time synchronisation
- Wireless software and stability updates
- Step-count information and activity overview
- Access to compatible settings and support functions
The Core 2 is not a touchscreen smartwatch and does not include onboard GPS mapping. A compatible smartphone and the Suunto app are required for connected functions.
Sunrise, Sunset and Moon Phase
Sunrise and sunset information helps users plan activities around the available daylight. The moon-phase calendar provides an overview of natural night-time illumination throughout the month.
These functions are useful for hiking, fishing, hunting, camping, photography and early-morning or evening field activities.
Time and Activity Functions
- Time and date
- Dual time zones
- Daily alarm
- Stopwatch
- Countdown timer
- Step counter
- Metric and imperial units
Water Resistance
The Core 2 has a stated water-resistance rating of 10 ATM / 100 metres. This makes it suitable for outdoor use in rain, wet environments and water-related activities within the limits stated in the official user guide.
The watch also includes an underwater depth function with a specified measurement depth of up to approximately 2 metres.
The 100-metre water-resistance rating is a laboratory pressure rating and does not mean that the watch is intended to operate as a dive computer at a depth of 100 metres. It is not designed for scuba diving or compressed-air diving.
Durability Testing
Suunto describes the Core 2 as tested according to selected MIL-STD-810 procedures. The supplied product information lists seven test areas:
- Heat
- Humidity
- Salt fog
- Solar radiation
- Low pressure
- Icing and freezing rain
- Dust
Important: Testing applies only to selected MIL-STD-810 procedures conducted by a laboratory accredited through the China National Accreditation Service for Conformity Assessment. It does not constitute military certification, military approval or endorsement by any branch of the armed forces.
Recommended Use
- Hiking and trekking
- Mountain travel
- Bushcraft and camping
- Fishing and hunting
- Field work and outdoor training
- Tactical and military-style equipment systems
- Expeditions and remote travel
- Water-based outdoor activities within the stated limits
- Everyday timekeeping and step counting
- Emergency and off-grid equipment kits
Package Includes
- Suunto Core 2 All Black watch × 1
- Suunto 22 mm Athletic 2 silicone strap, All Black × 1
- Quick guide × 1
- Warranty documentation × 1
Technical Specifications
| Product Name | Suunto Core 2 All Black |
| Brand | Suunto |
| Product Type | ABC outdoor watch |
| Colour | All Black |
| Product Code | SS051569000 |
| Model Reference | OW245 |
| Case Dimensions | 49 × 49 × 14.84 mm |
| Weight with Strap | Approx. 74 g |
| Case Weight | Approx. 56.5 g |
| Bezel Material | Stainless steel |
| Case Material | Composite |
| Crystal | Corning Gorilla Glass |
| Strap Material | Silicone |
| Strap Type | Suunto 22 mm Athletic 2 |
| Display Size | 1.3 inches |
| Display Type | LED dot-matrix display |
| Backlight | Switchable red and green |
| Primary Instruments | Altimeter, barometer and digital compass |
| Altitude Range | Approx. -100 to 10,000 m |
| Compass Resolution | 1° |
| Compass Accuracy | Approx. 5° |
| Bearing Lock | Yes |
| Magnetic Declination Adjustment | Yes |
| Weather Recording Length | Up to 7 days |
| Pressure Resolution | 1 hPa / 0.03 inHg |
| Temperature Resolution | 1°C |
| Temperature Display Range | -20°C to +60°C |
| Storm Alarm | Yes |
| Sunrise / Sunset | Yes |
| Moon Phase Calendar | Yes |
| Step Counter | Yes |
| Stopwatch | Yes |
| Countdown Timer | Yes |
| Alarm | Yes |
| Dual Time | Yes |
| Water Resistance | 10 ATM / 100 m |
| Underwater Depth Function | Up to approximately 2 m |
| Operating Temperature | -20°C to +60°C |
| Underwater Operating Temperature | 0°C to +40°C |
| Battery Type | CR3032 3 V coin-cell battery |
| Battery Replacement | User replaceable |
| Maximum Battery Life | Up to approximately 15 months in time mode |
| Typical Battery Life | Approx. 11 months, depending on use |
| Connectivity | Bluetooth |
| Bluetooth Frequency | 2402–2480 MHz |
| Approximate Connection Range | Up to approximately 10 m under suitable conditions |
| App Support | Suunto app |
| Interface Languages | English, German, Spanish and French |
| Durability Standard | Tested according to selected MIL-STD-810 procedures |
| Country of Origin | China |
Setup and Use
- Install the supplied CR3032 battery if it is not already fitted.
- Set the preferred language, measurement units, time and date.
- Connect the watch to the Suunto app when automatic time synchronisation or software updates are required.
- Calibrate the compass before relying on directional readings.
- Enter the correct magnetic declination for the current area.
- Calibrate the altimeter using a known elevation or current sea-level pressure.
- Check the battery indicator before extended trips.
- Carry an independent map, compass and emergency plan for remote travel.
Care and Maintenance
- Rinse the watch with clean fresh water after exposure to salt water, sweat, mud or dirt.
- Clean with a soft cloth and mild soap where necessary.
- Do not use aggressive solvents or abrasive cleaners.
- Keep the barometric sensor openings clean and unobstructed.
- Allow the watch and strap to dry before prolonged storage.
- Inspect the strap, buckle, case and glass regularly.
- Replace damaged straps or sealing components before demanding use.
- Follow the official instructions when replacing the battery.
- Ensure the battery cover and seal are installed correctly to preserve water resistance.
- Water resistance may decrease over time and should be checked after battery replacement, strong impact or case servicing.
Safety and Important Use Information
- The watch provides supporting outdoor information and is not a substitute for training, judgement or professional weather services.
- Do not rely on the storm alarm as the only warning of hazardous weather.
- Altimeter readings depend on atmospheric pressure and require regular calibration.
- Compass readings can be affected by magnets, metal structures and electronic devices.
- Carry an independent navigation method during remote or safety-critical travel.
- The watch is not a GPS navigation device and does not provide onboard maps.
- The watch is not a medical device.
- The step counter is intended for general activity information rather than clinical measurement.
- The watch is not a scuba-diving computer.
- Do not treat the 100 m water-resistance rating as a guaranteed operational diving depth.
- Avoid pressing buttons underwater unless specifically permitted in the official user guide.
- Do not expose the watch to temperatures outside its specified operating range.
Coin-Cell Battery Warning
CR3032 coin batteries can cause severe internal injury or death if swallowed.
- Keep new and used batteries away from children and pets.
- Do not use a damaged, leaking or deformed battery.
- Insert the battery with the correct polarity.
- Do not short-circuit, recharge, heat, burn or dismantle the battery.
- Dispose of used batteries through an appropriate battery collection system.
- Seek immediate medical assistance if a battery may have been swallowed or inserted into the body.
Why Choose the Suunto Core 2 All Black?
The Suunto Core 2 retains the straightforward tool-watch character of the original Suunto Core while introducing stronger water resistance, a clearer display, red and green backlighting, larger buttons, Bluetooth synchronisation, software updates, moon-phase information and step counting.
Its principal outdoor functions work without GPS or mobile coverage, while the replaceable battery avoids the need for frequent charging. The All Black design, durable materials and night-friendly red illumination make it particularly suitable for outdoor, field and military-style equipment setups.
FAQ
Is the Suunto Core 2 a smartwatch?
No. It is a classic ABC outdoor watch focused on altimeter, barometer, compass and time functions rather than a touchscreen, apps or onboard GPS maps.
Does the Core 2 have GPS?
No. Its altimeter, barometer and compass operate without GPS. The watch does not provide onboard route maps or satellite positioning.
Can the watch work without a phone?
Yes. Its main ABC, time, weather and compass functions work independently. A phone is required only for Suunto app features such as time synchronisation and software updates.
What does ABC mean?
ABC means altimeter, barometer and compass.
Does the compass work offline?
Yes. It is a magnetic digital compass and does not require mobile coverage, GPS or an internet connection.
Does the watch provide storm warnings?
Yes. The storm alarm can respond to rapid barometric pressure drops that may indicate deteriorating weather.
How long does the battery last?
Battery life is rated at up to approximately 15 months in time mode. Typical operating life may be closer to approximately 11 months depending on settings and use.
Can the user replace the battery?
Yes. The watch uses a user-replaceable CR3032 coin-cell battery. Follow the official replacement instructions carefully to protect the seals and water resistance.
What is the water-resistance rating?
The watch is rated to 10 ATM / 100 metres. This is a pressure-resistance rating and does not make it a scuba-diving computer.
How deep does the depth meter measure?
The supplied specification lists an underwater depth function up to approximately 2 metres.
What is the purpose of the red backlight?
The red backlight helps preserve night-adapted vision during low-light navigation and field activities.
Can the watch be operated while wearing gloves?
The large physical buttons are designed to be easier to operate in outdoor conditions, including with many types of gloves.
Does it show sunrise, sunset and moon phases?
Yes. The watch includes sunrise and sunset times together with a moon-phase calendar.
Does it count steps?
Yes. The Core 2 includes a step counter.
What does MIL-STD testing mean for this watch?
The watch has been tested according to selected MIL-STD-810 procedures. This does not constitute military certification, approval or endorsement.
Can the Suunto Core 2 replace a map and navigation compass?
No. It is a useful directional instrument, but remote travel should always include a suitable map, independent compass, route plan and appropriate navigation skills.
Glossary
- ABC Watch: Outdoor watch combining an altimeter, barometer and compass.
- Altimeter: Instrument that estimates elevation using atmospheric pressure.
- Barometer: Instrument that measures atmospheric pressure and helps identify weather trends.
- Storm Alarm: Warning triggered when pressure changes may indicate rapidly deteriorating weather.
- Bearing: Direction of travel expressed in degrees.
- Bearing Lock: Function that stores a selected direction and helps the user remain on that heading.
- Magnetic Declination: Difference between magnetic north and geographic true north.
- 10 ATM: Laboratory water-pressure rating equivalent to approximately 100 metres of static pressure.
- CR3032: Replaceable 3-volt lithium coin-cell battery.
- MIL-STD-810: Collection of environmental laboratory test procedures developed by the United States Department of Defense.
- Bluetooth: Short-range wireless connection used to communicate with a compatible smartphone.
- LED Dot-Matrix Display: Digital display that forms characters and symbols using a matrix of illuminated points.
Manufacturer & GPSR Information
Manufacturer:
Suunto
Tammiston kauppatie 7 A
FI-01510 Vantaa
Finland
Website and customer support:
www.suunto.com/Support/customer-support/










