Keychron K2 Pro a wireless custom mechanical keyboard in a 75% compact layout. With QMK/VIA compatibility. K Pro series keyboards takes a similar approach to the V-series keyboards in that it is geared towards accessibility while adding in the wireless functionality. Keychron K2 Pro Mechanical Keyboard Features: Compact 75% Layout Wireless (Wired Optional) Barebone (No switches or keycaps) QMK/VIA Compatible Tray Mount Design ABS Plastic Casing or Aluminum Casing Hot-Swappable PCB Steel Plate Sound Absorbing Foam Silicone Bottom Pad South-Facing RGB Typing Angle: 5° / 9.2° / 12° Screw-In PCB Stabilizers Battery: 4000mAh Rechargeable Li-Polymer Battery Bluetooth Battery Life: Up to 300 hours (Backlit off), 100 Hours (RGB on lowest brightness)(Lab tested, actual result may vary) Connection: Bluetooth 5.1 and Type-C Cable Operating Environment: -10 to 50℃℃ Includes: 1 Keychron K2 Pro Mechanical Keyboard 1 ABS Case or Aluminum Case 1 Hot-swap PCB 1 Steel Plate 1 Sound Absorbing Foam 1 Silicone Bottom Pad 3 Sets 2U Screw-In Stabilizers 1 Set 6.25U Screw-In Stabilizers 1 Type-A to Type-C Cable