simple solution to your USB power needs in a conveniently small package. Choose between the 1.0A model to charge mobile phones, MP3 players, cameras and other small USB charged devices, or the 2.1A model that can also charge Tablets and iPads. They also feature worldwide voltage input making them great for travellers. Just connect your USB charging cable (not included) and away you go. Specifications AC Voltage rating : 240.00000000V AC Frequency : 50.00000000Hz Length : 27.00000000mm Diameter : 40.00000000mm Mains Voltage Range : 100.00000000V, 240.00000000V Frequency : 50.00000000Hz, 60.00000000Hz Rated for AU Mains : true Rated for US Mains : true USB Lead included : false USB Voltage Output Range : 5.00000000V USB Voltage Outputs : 1.00000000 USB Current Output : 2.10000000A Has USB power output? : true Supported USB Standards : USB 2.0 Number of USB ports : 1.00000000 ports Type of Power Supply : Special purpose Special Application : USB Power/Charge