Stores three batteries and two microSD cards. Intelligently fast charges three batteries, and can be used together with those batteries as a power bank to charge other devices like a smartphone.

In the box: Osmo Action 3 Multifunctional Battery Case × 1

Compatibility: Osmo Action 3

Specifications: 

Dimensions: 116.2×59.2×22.9 mm (L×W×H)

Weight: 110 g