Updated

Updated · ZDNet · Aug 19

Suunto Core 2 Promises 15-Month Battery at $179, Trading GPS and Heart-Rate Tracking for Rugged Use

Updated

Updated · ZDNet · Aug 19

Suunto Core 2 Promises 15-Month Battery at $179, Trading GPS and Heart-Rate Tracking for Rugged Use

Q: What hidden limitation makes this highly durable outdoor watch completely unsuitable for deep-sea scuba divers?

The hidden limitation is its water rating: the Suunto Core 2 is only 10 ATM, which is fine for swimming and snorkeling but not for scuba diving, especially deep-sea use. That “100 meters” figure is often misunderstood. It reflects static laboratory pressure, not real underwater diving conditions with motion, gear impact, and changing pressure. Industry guidance generally treats 10 ATM watches as suitable for surface water sports, not scuba. For diving, buyers should look for a true dive-rated watch or dive computer, typically with higher certified water resistance and scuba-specific testing. Just as important, the Core 2 is not a dive computer. Even though it has a dive or snorkel mode, the materials provided do not indicate decompression tracking, gas management, ascent-rate monitoring, or recognized scuba certification. Those are critical for safe scuba use and are found on purpose-built dive devices such as Suunto’s Ocean or Nautic S lines. So the watch’s durability is not the issue. Its real limitation is that it is rugged for outdoor land use and shallow water activity, but lacks both the proper dive rating and the underwater safety functions required for deep-sea scuba diving.

1 articles · Updated · ZDNet · Aug 19

$179 Suunto Core 2 is pitched as a rugged outdoor watch with a CR3032 battery rated for up to 15 months, far beyond the multi-day battery life common in many smartwatches.
Testing found the trade-off: the watch lacks built-in GPS and a heart-rate sensor, but offers altimeter, barometer, compass, storm alarm and dive tracking to 30 feet.
Step-count checks over walks exceeding 10,000 steps put the Core 2 about 200 steps above the manual count, behind a Garmin Fenix 8 Pro at roughly 90 steps over but ahead of a Casio G-Shock at more than 350.
MIL-STD-810H certification, 10 ATM water resistance and Gorilla Glass support its outdoor focus, while Bluetooth app syncing is limited to manual step and time updates plus firmware downloads.
ZDNET’s verdict frames the Core 2 as a durable companion for hiking, camping and snorkeling rather than a full fitness smartwatch, with battery life and weather tools as its main draw.