Features: 1.This keyboard adopts 10in widening and enlargement processing, which has more keys and wider keys than ordinary 7?inch keyboard. 2.The brushed metal texture keyboard panel is non?slip, giving people a high?end feel. 3.The keyboard is portable and ultra?thin, so it is very convenient to carry it on trips or business trips, which can be used with smartphones, tablets, laptops, and desktop computers. 4.The keyboard is light in weight, quiet keys, waterproof, dustproof, scissor keyboard, fast typing and good hand feeling. 5.The keyboard adopts new high-quality all-aluminum alloy back cover, which allows users to have a better experience. specification:Item Type: Wireless Bluetooth Keyboard Bluetooth 3.0: Standard MICR Interface Within 10 meters: Effective Operation Modulation Method: GFSK Working Voltage: 1.8~3.6V Working Current: