QQ-Tech&reg; LED Flashing Case Cover Sense Flash Light Hard Skin for Samsung Galaxy S III/S3 i9300 (Pink) Slim & Light Weight, Protects S3 on sides and back from scratches & dents & abrasion; The case can light, shine, flash when calling and answering; All interface, ports and buttons are easily accessible while resting in galaxy s 3 shell casing; One 3V lithium battery ( CR2016 ) is included (Please note: the negative side is up when push it into the back cover), Conveniently to access and remove, can be replaced when used up; Seller's Kind Reminder: this novel flashing case is a lot fun to show and surprise your friends, and offer very good protection at daily use. the case itself is made of plastic, please do not expect it will be as expert as otterbox...