What's in the box:

Ulanzi G8-10 Camera Battery Compartment Cover Lid Quick Release Type-C Charging Port Cover Compatible with GoPro Hero 8 Black (Standard)

Features:
The battery cover is designed for compatible with GoPro Hero 8 Black.
Integrated sponge inside the cover to hold battery tight.
Convenient to set up and release, useful accessory for daily use.
With pre-reserved hollow for battery charging or microphone without taking off the battery cover.
Made of high quality plastic, wear-resistant for long service life.

Specifications:
Brand: Ulanzi
Model: G8-10
Package Size: 6 * 6 * 4cm / 2.36 * 2.36 * 1.57in
Package Weight: 15.5g / 0.55oz

Packing List:
1 * Battery Cover