Features:
Detachable and waterproof.
Transparent case for a perfect view for the LCD bacpac.
Rubber rings to ensure waterproof function. 
With elastic spring & stainless steel made button on the side.
Rubber strips inside to buffer vibration towards the LCD.

Specifications:
Material: PC 
Item size: 6.7 * 5.5 * 2cm / 2.6 * 2.2 * 0.8in
Package weight: 26g / 0.91oz

Package List:
1 * Waterproof Backdoor

Note:
This item only includes Waterproof Backdoor.