The Stress Reliever 2,200 mAh Power Bank has a rechargeable lithium-ion battery that provides power to charge smartphones, MP3 players and many other devices. It also features with stress reliever. Includes a USB to Micro USB charging cable. Input 5V/1A, output 5V/1A. Complies with Prop 65. 4" H. Imprint Area is 0.44" H x 0.50" L on 1 color only centered on white cap. Please call for rush delivery availability or for multi-colour, multi-location imprints.