Whether you are traveling for work or play, this is the most efficient way to keep your gadgets from running on empty. Fuel up with this compact-sized, 2200mAh premium grade lithium ion battery power bank & get the energy that you need to keep going. Recharge your devices quickly with the premium 2200 mAh lithium ion battery Sleek design for maximized portability Large, full-color imprint space Key ring Retail packaging. Complies with Prop 65. 3.8" W x 0.9" L x 3" H