Keychron K2 Version 2 Wireless Mechanical Keyboard WHITE Backlight PLASTIC Frame SPECIFICATION Number of Keys: 84 keys Switches: Gateron blue/red/brown switches Number of Multimedia Keys: 12 Main Body Material (A, B Series): ABS Main Body Material (C Series): Aluminum bezels and ABS bottom frame Keycap Material: ABS CONNECTIVITY AND POWER Backlit Types: 18 Backlit: Adjustable 4-level RGB backlit System: Windows/Android/Mac/iOS Battery: 4000mAh Rechargeable li-polymer battery BT Working Time (Single LED): Up to 68 hours (Lab test result may vary by actual use) BT Working Time (RGB): Up to 72 hours (Lab test result may vary by actual use) Charging Time: Around 3 hours Connection: Bluetooth and Type-C cable Bluetooth version: 5.1 Bluetooth Device Name: Keychron K2 Compatible System: macOS/Windows/ PHYSICAL UNIT Dimension (Plastic frame version): 313 x 123 x 38.5mm Weight: About 663g / 23.4oz Dimension (Aluminum frame version): 317 x 129 x 38.5mm Weight: About 794g / 28oz Operating Environment: -10 to 50℃ PACKAGE CONTENT 1 x Keyboard 1 x USB-A to USB Type-C Cable 1 x Keycap Puller 1 x User Manual