HXSJ L400 Three-mode Wireless RGB Light Thin Film 81 Keys Keyboard Product parameters: 1. Product name: L400 Three mode Wireless Keyboard 2. Connection mode: 2.4G+BT1+BT2 3. Number of keys: 81Keys 4. Mcu: HS6621DQ 5. Return rate: 133Hz 6. Charging current: Maximum 560mA 7. Voltagecurrent: 3.7V50mA 8. Button life: 50 million times or more 9. Keycap material: ABS 10. Charging interface: USB to Type-C conversion (1.5m) 11. Luminous Type:Rainbow backlight 12. Keyboard type:Membrane keyboard 13. Number of conflict free keys: 24 keys without conflict 14. Battery capacity: 2000mAh 15. Bluetooth, 2.4GHz mandatory code matching mode: Esc+Q 16. Support connecting 2.4G and two Bluetooth devices, with a wireless transmission distance of 10 meters 17. Product size: 35.9x14.6x4.3cm 18. Product weight: 579g Products include: 1. L400 three mode Wireless Keyboard x 1 2. USB receiver x 1 3. USB to TYPE-C charging cable(1.5m) x 1 4. Instruction manual x 1 System Requirements: For Windows 98Me2000XPVista Win 7Win8Win10Win11 or Mac IOS and Linux latest. Battery life and sleep mode: 1. The sustainable use time of turning off the lights is about 150 hours; 2. The minimum brightness can be used continuously for about 40 hours; 3.The maximum brightness can be used continuously for about 16 hours 4. The backlight remains on during normal use, and automatically turns off after 60 seconds of no one using it, entering an idle state (triggering any key to turn on the backlight). 5. After 10 minutes, it will enter sleep mode and needs to be awakened to use.