Features: 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 operation, 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 tri mode connection (wired, wireless, 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 operation. 6.COMPATIBLE SYSTEM: Blue switch mechanical keyboard is compatible with phones, tablets or laptops for Android, for Windows 10, for iOS and for OS X. You can connect it to your desktop computer using a USB cable. specification:Item Type: Typewriter Keyboard Material: Metal, Plastic, Electronics Applicable: Universal Type: Mechanical Keyboard Number Of Keys: 83 Keys Interface: TYPE C Whether To Support Plug And Play: Support Connection With The Computer: Wireless Whether There Are Multimedia Function Keys: Yes Shortcut Keys: Yes Waterproof Function Support: Waterproof Key Technology: Mechanical Axes Backlight Function: Support Backlight Whether To Support Ergonomics: Support Operating Current When The Backlight Is Always On: 150 MA Operating Current When The Backlight Is Turned Off: 8 MA Bluetooth Mode Sleep Current: 0.6 MA Key Rollover: Wired N Key Rollover, Bluetooth 6 Key Rollover Operating Voltage: 3.7V Operating Mode: Wired, Wireless, Bluetooth Hibernation Time: 2 Minutes After The Device Does Not Operate Automatically Into The Hibernation State, Press Any Key To Wake Up Operating System: Compatible With For Windows2000 Or Above And For OS X Operating System, BLE Support For WIN8 Or Above System Battery Type: Built In 2000mAh Lithium Battery (Included) PackageList: 1 x Keyboard 1 x Charging Cable 2 x Keyboard Replacement Shaft 1 x Key Puller 1 x Instruction Manual