Specification: There are dual Mode Connection, including bluetooth-compatible 4.0 and Type-C dual mode connection, which makes it widely compatible with multiple systems, for Mac, for iOS, for Windows, for Linux, and for Android. Double FN. Double FN key(FN1/FN2) creates more possibilities for you to set the layer function. Intelligent "Tap Key" and "Magic FN" function: Tap Function: "Right Shift", "FN1", "FN2", "Right Ctrl" are in combination as TAP key, you could set the tap layer function, and when you click the TAP key. It will trigger this layer function. By default, they behave as arrow key when tapped. Magic FN Function: While retain the original CapsLock function, the magic key can copy the FN1 or FN2 key function that gives you quick access to media. This means magic FN can act as the FN key. You could set the function layers for FN1/FN2, customize any keys or even create a macro for keystroke combination through the Starter, and the Magic FN function can mirror this FN behavior. It is designed with 1900mAh large capacity battery, and built-in protection circuit prevents harm to battery. Doubleshot PBT keycaps are durable and not easy to shine as ABS keycaps. With full RGB backlight, each key can been set RGB backlight independently. All keys programmable, built-in large capacity on board memory for TAP/Magic FN function customization, light effect setting, keyboard layout setting and Marco setting. Item Name: Mechanical Gaming Keyboard Material: PBT Model: ANNE PRO 2 Layout: 60% ANSI Keys Amount: 61 Keys Switch: for Gateron Switch (Brown Switch, Red Switch, Blue Switch) Connection: Dual Mode, USB Wired (for Windows 7/8/10, for Mac, for Linux) , bluetooth-compatible LE4.0 (for Windows 7/8/10, for Mac, for Linux), Backlight 16.8 Million RGB Backlight Light Source: SMD Lamp Beads Anti-Ghost Key: NKRO Keycap: PBT Double Shot Molding Keycap Battery: Built-in 1900mAh Battery (Included) USB Operating Current: DC 5V, 500mAH Max Features: Backlight, Keycap Replacement, Bluetooth Size: 97mm x 284mm x 40mm/3.82" x 11.18" x 1.57" (Approx.) Cable Length: 1.8m/70.87" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Included: 1 x Mechanical Gaming Keyboard 1 x Keycap Puller 1 x USB Cable 1 Set of Blank Keycap (Total 11Pcs)