Feature:1. CONNECT THREE DEVICES: Keyboard bluetooth can be connected to three devices at the same time, seamless switching between devices.2. BACKLIGHT EFFECT: transparent keyboard shell, you can clearly see the internal structure of the keyboard, with the backlight effect, so you have a different experience.3. 32.8FT OPERATING DISTANCE: Wireless bluetooth keyboard is waterproof, dustproof, and can be operated effectively within 32.8ft.4. WIDENING AND ENLARGING: 10in keyboard widening and enlarging processing, the keys are quiet, scissor type keys, typing fast, can have a better experience.5. SCOPE OF APPLICATION: Portable, ultra thin, can be used with smart phones, tablets, laptops, desktop computers.Specification:Item Type: Transparent Wireless Bluetooth KeyboardMaterial: ABS, Iron PlateBluetooth 3.0: Standard Type C InterfaceEffective Operating Distance: Within Approx. 10meters / 32.8ftModulation Mode: GFSKOperating Voltage: 1.8 to 3.6VOperating Current: <2.0mAStandby Current: 0.3 to 0.5mASleep Current: <40UACharging Current: ≥200mAStandby Time: >30 daysCharging Time: <2 hoursBuilt in Polymer Lithium Battery: 400mAhContinuous Working Time: 44 HoursKey Force: 80±10gKey Life: 5 Million ClicksOperating Temperature: -10 to 55℃.Package List:1 x Keyboard (Ship with Inbuilt Battery)1 x Charging Cable