Feature: 1. THREE MODE: The Mechanical keyboard is designed in three modes, USB wired, 2.4G wireless, 5.2BT, which supports connecting three devices at the same time to use them as you like, and switching seamlessly. 2. 3 GROUPS BACKLIGHT MODES: 3 groups of backlight modes are preset, which are for shooting games (WASD with white backlight), gaming modes (QWER and other keys are lit up) and office modes for 37 keys, and FN+~ supports recording backlight modes. 3. ULTRA THIN BODY: Bluetooth mechanical keyboard adopts Gasket structure, with a little sinking space inside the bottom case, the thickest is 26mm, ultra thin body, easy to use. 4. ROUNDED RECTANGLE KEYCAPS: The keycaps have a rounded rectangle outline that shortens the distance between the contact surfaces for your convenience. 5. TILTING ANGLE: Mechanical keyboard adopts black transparent shell, the end of the shell is tilted with its own tilting angle, no foot support, can't adjust the tilting angle size. Specification: Item Type: Wireless RGB Mechanical Keyboard Material: ABS, PBT Transmission: USB Wired, 2.4G Wireless, 5.2BT Built in Polymer Lithium Battery: 2500mAh Lighting Effects: Single Light (20 Groups of Light Effects) Key Layout: 83 Keys Cable Length: Approx. 1.6meter / 5.25ft Support System: For Windows Vista/7/8/10/11, for OS X, for Android . Package List: 1 x Wireless RGB Mechanical Keyboard (Ship with Inbuilt Battery)1 x Instruction Manual1 x Puller Clip1 x Connection Cable1 x Receiver