Main Features1. Suspended keycaps design、 stylish look and easy to clean2. Compatible with Windows XP/ Windows Vista/ Windows 7/ Windows 8/ Win 10 3. The effective transmission distance up to 10 metersSpecification 1.Bluetooth Specification: V3.0Class22.16GHz polling rate 3. Working voltage: 3.3VdcPacking Details 1.Color: White 2.Keyboard size: 284.34mm*119.80mm*5.8mm3.Weight:310g+/-2gNote: The product does not contain battery and need buy two batteries that type_aaa so that better work.