Overview: Bluetooth remote control of your PC. Convenient size. Backlit keyboard for convenient operation in darkened room.QWERTY keyboard. Built-in rechargeable Lithium-ion battery. Bluetooth radio transceiver. Standard: Bluetooth V2.0, HID V1.0. Charge voltage/current: DC 5V/300m A. Standby time: 300 hours. Operation temperature: -10 ~ 55 Specification: Weight Approx:51g Size Approx:8.2 x 5.5 x 1