Aluminum Slim Power Bank 3000 mAh, UL Certified 1.Material: Aluminum 2.Battery Capacity:3000 mAh polymer lithium battery3.Model Size:104*59*10(mm); 4.Connect: USB + Micro 5.Input:5 V / 1A; 6.Output:5 V / 1A; 7.Cycle count More than 500 times, Free shipping , Free LOGO Printing , Laser Engrave LOGO, Full color printing LOGO. Complies with CE, FCC, Prop 65, RoHS, UL, UN38.3. 4.1″ L x 2.32″ W x 0.4″ Thick