This is the GoPro HERO3 Skeleton Housing. The HERO3 Skeleton Housing has open sides to allow cables to be plugged into your camera for live-feed video, charging, cooling and enhanced audio at low speeds. Compatible with HERO3 cameras only. 

Includes: 

• (1) Skeleton Housing
• (1) Skeleton Backdoor
• (1) Quick-Release Buckle
• (1) Long Thumbscrew

NOTE: Use in dry environments only. The Skeleton Housing is NOT waterproof.