The UL Listed Elec 4,400 mAh Power Bank is a rechargeable lithium ion Grade A battery device powerful enough to charge smartphones, MP3 players and more. Reusable power bank charges via USB cable (included) which can recharge the battery backup or be used to charge devices with a micro-USB input such as Android smartphones from Samsung(R), Motorola(R), HTC(R), Nokia(R), and others. A constant press on/off power button activates the flashlight. Input: 5V/1000mA; Output: 5V/1000mA. Complies with Prop 65. 0.812" H x 1.625" W x 3.75" L. Imprint Area is 0.38" H x 2.25" L on 3 color max per side. Please call for rush delivery availability or for multi-colour, multi-location imprints.