QQ-Tech External True 2400 mAh Extended Battery Backup Charger Power Bank for Motorola Droid RAZR XT910 - White Stylish slim design decent finish, best battery case for XT910; Durable case provides good protection to your XT910 from bumps and scratches; Truly 2400mA power capacity extends your usage; LED indicates how much charges left; 2 colors to select; 1 year manufacture warranty