Main Features:
100% brand new
High quality back cover hard case for iPhone 4/4S
Flash while calling or called
Colorful shinning flash
Offer complete back protection for your iPhone
Power with a CR2016 button cell, included
The electron battery can be replace
Conveniently to access and remove
Made of plastic, very lightweight
All iPhone buttons are easily accessible while resting in iPhone 4/4S shell casing

Specifications:
Material: Plastic
Power: CR2016 (included)
Compatible with iPhone 4/4S
Product weight: 27 g
Package weight: 40 g
Product size (L x W x H): 11.7 x 6.2 x 1.2 cm
Package size (L x W x H): 15.0 x 7.2 x 1.7 cm

Package Contents:
1 x Sense LED Flash Light Back Case for iPhone 4/4S
1 x 3V CR2016 Electron Battery