Specification: ANNE PRO 2 Layout:60% ANSI Keys Amount : 61 Keys Case : ABS Black/White Case Switch : Cherry Brown Switch,Cherry Blue Switch Connection : Dual Mode, USB Wired (Windows 7/8/10, for M ac, Linux) ,bluetooth-compatible LE4.0 (Windows 7/8/10, for M ac, Linux) ,Backlit 16.8 Million RGB Backlit Light Source :SMD Lamp Beads Anti-Ghost Key : NKRO Keycap: PBT Double Shot Molding Keycap Battery: Built in 1900mAh Rechargeable Li-ion Battery USB Operating Current: DC 5V, 500mA Max Dimension : 97x284x40mm Cable : 1.8m Type-C USB Cable 1. How to control the backlit FN2 + 0 = Backlit On/Off ; FN2 + 9 = Backlit Modes Switching ; FN2 + - = Backlit Brightness Control ; FN2 + + = Backlit Display Speed Control 2. How to pair with the Bluetooth-compatible device Anne Pro2 supports connecting four devices. Turn on the Bluetooth-compatible switch, long press Fn2+ Bluetooth-compatible key 1/2/3/4 until the key blinks, then search the anne keyboard in your device and choose to connect. 3. How to switch the Bluetooth-compatible device Short press the FN2 + Bluetooth-compatible key 1/2/3/4 which has been paired with. 4. Does Anne Pro 2 have the Bluetooth-compatible dongle No, you need to buy the Bluetooth-compatible dongle separately if you want to pair with desktop PC computer. Package Included: 1 x Obins Anne Pro 2 60% NKRO Bluetooth-compatible 4.0 Type-C RGB Mechanical Gaming Keyboard 1 x Keycap Puller 1 x USB-C Cable 1 Set x 11PCS Blank Keycap (8 x 1.25u; 1 x 1u/2.75u/2.25u)