This product is solely a Battery Charging Case and does not include a battery. You can purchase the battery separately at this link: https://dji-retail.co.uk/products/osmo-action-extreme-battery

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 4 / Action 3 Multifunctional Battery Case × 1

Specifications:

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

Compatibility:

• Osmo Action 5 Pro
• Osmo Action 4
• Osmo Action 3