Feature 1Compatibility: Mechanical keyboard suitable for Windows, for OS X, for Android, for IOS, bringing you a professional and excellent use experience. 2Backlight Modes: Wireless bluetooth keyboard has 21 backlight modes and 4 side light modes, you can choose dynamic or static light modes according to your preference. 33 Modes: Mechanical keyboard offers multiple connectivity options, including 2.4G wireless mode, Bluetooth 5.0 and USB C wired mode, allowing you to connect and easily switch between up to four devices simultaneously. 4PBT Keycaps: Keycaps made of highly durable PBT plastic with advanced thermal sublimation coloring technology for less wear and tear, practical and stable. 5Professional Design: Mechanical keyboard with 75% layout (84 keys), advanced design makes you more comfortable and faster when typing and using.Item Type:MechanicalKeyboardMaterial: ABSBuilt in Battery: Lithium battery 1850mahConnectivity: 2.4G wireless, Bluetooth 5.0, Wired Type CKey Number: 84 keysKeyboard Light Effect: 16.8 million RGBSwitch Base: Low switch welding switchSwitch: Mechanical red switchBattery Type: 1850mAh lithium ion battery (with built in battery)Compatible System: Suitable for Windows, for OS X, for Android, for IOS .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Keyboard1 x 2.4G Receiver1 x Power Cord1 x Key Puller1 x User Manual