Main Features: High quality brushed back cover hard case for iPhone5 Flash while calling or called Colorful shining flash Offer complete back protection for your phone Power with a CR2016 button cell, included The electron battery can be replace Conveniently to access and remove Made of plastic, very lightweight All phone buttons are easily accessible

Specifications: Material: Plastic Power: 1 x CR2016 (included) Product weight: 28 g Product size (L x W x H): 12.5 x 6.1 x 1.1 cm

Package Contents: 1 x LED Flash Light Back Case 1 x CR2016 Button Cell

Product Note:
You should put the round battery slightly right in the hole before putting on the case. If the case flashes with colorful lights, for about 10 seconds, the flasher protector is workable, and you have positioned the battery in the right place, then the case will flash while you make phone call or being called.