Features:

• 1:1 real machine mold opening , perfect size for the camera body
• Rechargeable battery cover design, reserve a charging port ,not only can replace the battery at any time , but also can charge GoPro or connect an external microphone
• Can be connected to filter , standard type 55mm filter adapter ring,external filter can be connected when needed
• What’s in the box: plastic cage*1, ND filter adapter*1, lens protector*1, top up base*1