Feature:1. QUAD AXES ROUND KEYCAPS: Bluetooth mechanical keyboard uses quad axes round keycaps to ensure that your fingers do not get tired easily during typing, even after long hours of operate, giving you a softer tapping sensation.2. SEVEN COLOR RGB LIGHTING: Seven color RGB lighting to increase the gaming ambient. Pull the toggle to adjust the white LED light mode. You can also adjust the volume and brightness of the light by turning the wheel.3. MECHANICAL BLUE SWITCH: Support 2 mode connection (wired, Bluetooth). Bluetooth 5.0 is easier to connect. Mechanical Blue switch, responsive, long press loss is small. Character slit two color night off light normal use.4. THICK LEATHER DECORATION: Selected thickened leather decorative wrapping, wear resistant and scratch resistant, comfortable to the touch. The perfect combination of retro and practical functions, providing fun in the game and office.5. 2000MAH LITHIUM BATTERY: Typewriter mechanical keyboard built in 2000mAh lithium battery, low power consumption module, bringing stronger battery life. The device automatically goes into hibernation after 2 minutes of no operate.6. COMPATIBLE SYSTEM: Blue switch mechanical keyboard is compatible with phones, tablets or laptops for Android, for Wind 10, for iOS and for OS X. You can connect it to your desktop computer using a USB cable.Specification:Item Type: Typewriter KeyboardMaterial: Metal, Plastic, ElectronicsApplicable: UniversalType: Mechanical KeyboardNumber Of Keys: 83 KeysInterface: TYPE CConnection With The Computer: WirelessWhether There Are Multimedia Function Keys: YesShortcut Keys: YesWaterproof Function Support: WaterproofKey Technology: Mechanical AxesBacklight Function: Support BacklightWhether To Support Ergonomics: SupportOperating Current When The Backlight Is Always On: 150 MAOperating Current When The Backlight Is Turned Off: 8 MABluetooth Mode Sleep Current: 0.6 MAKey Rollover: Wired N Key Rollover, Bluetooth 6 Key RolloverOperating Mode: Wired, BluetoothHibernation Time: 2 Minutes After The Device Does Not Operate Automatically Into The Hibernation State, Press Any Key To Wake UpOperating System: Compatible With For Win 2000 Or Above And For OS X Operating System, BLE Support For WIN8 Or Above SystemBattery Type: Built In 2000mAh Lithium Battery (Included).Package List:1 x Keyboard1 x Charging Cable2 x Keyboard Replacement Shaft1 x Key Puller1 x Instruction Manual