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.
Osmo Action 3 Multifunctional Battery Case × 1
Dimensions: 116.2×59.2×22.9 mm (L×W×H)
Weight: 110 g
Osmo Action 3
Osmo Action 4