Viboton KB 91 2 4GHz Air Mouse Wireless Keyboard Remote Control Built in Li ion Battery with USB ReceiverFeatures It can fully realize the traditional keyboard and mouse function 2 4GHz wireless with USB receiver plug and play Compatible with Windows Android Linux systemsAbout 15m remote control distance Built in 130mAh lithium ion battery Specification GeneralBrandViboton ModelKB 91 TypeKeyboard and Mice ColorBlackProduct DetailsInterfaceWirelessConnectionMini USB Power SupplyLi ion BatteryDimension and WeightProduct weight 0 085 kg Product size L x W x H 15 30 x 4 90 x 1 20 cm 6 02 x 1 93 x 0 47 inches Package Included 1 x Viboton KB 91 Air Mouse Wireless Keyboard1 x USB 2 0 to Mini USB Cable1 x USB Receiver1 x Manual in English and ChineseDetail Pictures