The hot-swappable shaft is adopted to support the hot-swap of the five-pin shaft and the three-pin shaft.Connection : wireless 2.4G Bluetooth 5.0.2.4G mode: 125hz rate of return, long battery life and energy saving solution.Bluetooth mode: Bluetooth 5.0 protocol, supports pairing and switching between two machines.Made of ABS material, durable and long service life.Product name: TESTER 68Product code: TES68Product arrangement: standard 68-key compact arrangement supply mode: No. 7 battery (AAA) x 2Positioning plate: white fuel-injected metal positioning plate + interlayer sound insulation siliconePCBA: White 1.2mm thick and rigid double-sided PCBAAxle : hot-swappable shaft Satellite axis: white POM positioning board satellite axisPrecautions :The shaft tester does not include the key cap and shaft body, and comes with a satellite shaft.The shaft tester does not support wired connection and has no USB interface.The axle tester package does not with batteries, please purchase AAA batteries on your own.Bluetooth 5.0 is not compatible with WIN7, it is recommended to connect under WIN10 system.PCBA has no light master control, no light position, and does not support light modification.Type: Mechanical keyboardNumber of keys: 68 keysInterface: BluetoothConnection with computer: bluetoothKey technology: mechanical shaftcolor:GreenMaterial:ABSsize:310 x 101 x 31mmPackage Contents:1 x Mechanical Keyboard Shaft Tester Body1 x Chinese And English Manual72 x Red AxisOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.