The Jet Square 2,000 mAh rechargeable lithium polymer Grade A battery is enough to charge smartphones, MP3 players and more. Includes a strap for easy portability. Reusable power bank charges via USB cable (included) which can recharge the battery backup or be used to charge devices with micro-USB input like Android smartphones from Samsung(R), Motorola(R), HTC(R), Nokia(R), and others. Blue LED indicator light turns on when device is fully charged. Input: 5V/500mA. Output: 5V/1000mA. US Patent #D760,64. Complies with Prop 65. 0.375" H x 2.375" W x 2.75" L. Imprint Area is 2.00" H x 1.50" L. Please call for rush delivery availability or for multi-colour, multi-location imprints.