Features:Brand new and high qualityThis product is a shaft tester with keyboard function.Product does not contain switches and keycaps (with satellite shaft).The satellite shaft is not lubricated at the factory.PCBA has no light master control, no light position, and does not support light modification.No USB cable, no battery (you need to buy it yourself).No driver, buttons cannot be customized.Conforms to the Bluetooth-compatible standard in Bluetooth-compatible mode, supports 6 keys without conflict.2.4G supports 19 keys without conflict (Q.A.Z.W.S.X.E.D.C.B.Space.....Tab.Alt-L/V.Ctal-L/F.Shift-L).There is a soundproof silicone interlayer between the positioning board and the PCBA board. Specifications:Quantity: 84 keys, 100 keys(optional)Connection mode: 2.4G or Bluetooth-compatible 5.0 or USB Wired Note:Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes:1 x Test shaft body