A small metal strut separates the motherboard from the battery, and protects the unit from over-enthusiastic squeezing, to ensure your Fit is fit for active duty.

The curvy Fit features a curved battery, snugly fitted as a bug in a plastic rug.

Although it is pretty deeply buried, the battery is still equipped with a friendly and useful pull tab. We'll call this "fairly" user-replaceable.

While we couldn't find any useful markings to confirm, Gizmodo tells us this is a 210 mAh battery, with 3-4 days between charges.

That puts the Gear Fit ahead of the Gear 2 in the battery department, due mostly to a simpler OS and its low-power processor.