Suunto Core 2 leak points to a replaceable CR3032 battery and 100 m water resistance, with Bluetooth features in the mix

A new regulatory filing suggests Suunto is preparing a Core 2 watch that could significantly extend battery life by sticking with a replaceable coin-cell design.

The device appears in U.S. Federal Communications Commission documents, indicating launch preparations are advancing.

The original Suunto Core has long stood out for using a CR2032 battery that owners can swap rather than recharge. That approach can deliver months of runtime depending on usage, and the leaked Core 2 points to the same low-maintenance philosophy.

FCC filing reveals key upgrades

In the filing, Suunto appears to move from a CR2032 to a larger CR3032 cell, which is commonly rated at roughly 500 mAh versus about 225 mAh for many CR2032 batteries. Combined with newer, more efficient components, this change could push real-world battery life toward the multi-year range for light use.

The documents also indicate Bluetooth Low Energy connectivity, a hint that phone pairing and basic smartwatch-style functions may be supported. At the same time, the emphasis on longevity suggests Suunto may keep features restrained to limit power draw.

Tougher build, fewer sensors

Another notable change is the listed water resistance, which rises to 100 meters, up from the 30-meter rating associated with earlier Core models. The housing is described as stainless steel, aligning the Core 2 with more rugged outdoor watch expectations.

Images and diagrams referenced in the certification suggest no optical heart-rate sensor on the back. That lines up with the Core line’s outdoors-first toolset, where altimeter, compass, weather tools, and temperature readings can matter more than continuous health tracking.

What to watch next?

The FCC process does not confirm pricing or an official release date, but it typically appears close to commercialization for connected devices. With manufacturing listed outside Finland in the documentation, the Core 2 may also reflect a broader shift in Suunto’s production footprint.

Until Suunto announces the product, key questions remain around the exact feature list, compatibility with mobile apps, and the conditions behind any multi-year battery estimates. Still, the filing makes clear that Suunto is betting on a rare proposition in wearables: long life through a simple, replaceable battery.