The US filing points to an imminent launch and lists a replaceable 500mAh CR3032 lithium battery, 100m water resistance and a stainless steel case.
The battery is more than double the old Suunto Core's CR2032, suggesting the watch could run for up to two years depending on GPS use and display activity.
The leak indicates Suunto may prioritise longevity over advanced features, with no heart rate sensor mentioned, in a design compared with Garmin's Fenix line.
Could the omission of a heart rate sensor and possible lack of GPS make the Core 2 less appealing, despite its standout battery life?
How does the Core 2 balance rugged reliability and minimalism against the trend of smartwatches packed with sensors and vibrant displays?