Package List 1 x K2 Wireless Mechanical Keyboard 1 x Windows Keycaps 1 x Type C Cable 1 x User Manual Connectivity and Power Battery: 4000mAh Rechargeable li-polymer batteryBT Working Time: Up to 72 hours (Lab test result may vary by actual use)Connection: Bluetooth and Type-C cableBluetooth version: 5.1 Bluetooth Mechanical Keyboard Keychron K2 is a 75% layout (84-keys) white led backlit compact Bluetooth mechanical keyboard. The ultimate keyboard that retains shortcut and arrow keys. With a unique Mac layout provides all necessary Mac function keys, while compatible with Windows. It connects with up to 3 devices with the reliable and broad compatibility Broadcom Bluetooth chipset proved from time over time. Gateron G Pro Mechanical Switch Given that 2 ±0.6mm pre-travel and 55gf operating force, the Gateron G Pro mechanical switch feature a nice feel while satisfying your finger with up to 50 million keystroke lifespan. 75% layout Mechanical Keyboard K2 is a 75% layout (84-key) white LED backlight compact Bluetooth mechanical keyboard that retains shortcut, arrow keys, and comes with a dedicated screen capture key. Wireless and Wired Dual Modes Connects with up to 3 devices via Bluetooth and switch among them easily, best fits home, office use while connecting with your smartphone, laptop and iPad. You can choose USB type-c wired mode for constant power supply. For Mac & Windows Designed with Mac users in mind, with a unique Mac layout, K2 has all necessary Mac function keys, while compatible with Windows. Just plug and use, no driver is needed. Extra keycaps for both Windows and Mac operating system are included. 4000mAh Big Battery K2 can last up to 72 hours typing with a 4000 mAh big battery, which is one of the biggest in mechanical keyboard, plus an inclined bottom frame makes the K2 more comfortable to crank out emails or write a novel. N-key rollover (NKRO) on wired mode or 6KRO on wireless mode. White LED Backlit White LED backlight with elegant legends will match up to your mood, you can also choose static white backlight mode. With Gateron G Pro mechanical switch providing unrivaled tactile responsiveness with up to 50 million keystroke lifespan. Community Driven Design Covered by major tech media which thanks to our community that contributed to make a perfect design. SPECIFICATION Number of Keys 84 keys Switches Gateron G Pro blue/red/brown switches Number of Multimedia Keys 12 Main Body Material ABS Polling Rate (Wired Mode) 1000Hz Polling Rate (Wireless Mode) 90Hz Dimension 313 x 123mm Bluetooth version 5.1 Compatible System macOS/Windows