POWER TUBE 5200U is a 5200mAh handy and universal power bank with standard USB output port and Micro USB input port. It supports charging to over 90% mobile phones on the market. Its premium aluminum alloy materiel and high quality package make it a nice piece to be a cell phone accessory or gift. SPECIFICATIONS Output Voltage / Current: 5V / 2.1A Input Voltage / Current: 5V / 1A Battery: Li-ion battery Cycle Life: 500 times Standard Capacity: 5200mAh / 3.7V (19.2Wh) DC Charging Time: 6-7 hours Operating Temperature: 0~45¡æ Product size: 42 x 21 x 96mm Package size: 95 x 37x 147mm Product weight: 105g Package weight: 215g PACKAGE LIST 1 x Power Tube 5200U 1 x Micro USB Charging Cable 1 x Pouch 1 x User Manual