Logitech MX Mechanical Wireless Bluetooth Dual Mode Keyboard with Logi Bolt USB Receiver 1. Easy-switch: connect up to 3 devices and switch between them 2. Hand proximity sensor activated backlighting 3. Auto-adjust ambient light sensor 4. 10m wireless range 2Wireless range may vary depending on operating environment and computer setup. 5. USB-C rechargeable: up to 15 days or up to 10 months with backlighting off 3Battery life may vary based on user and computing conditions 6. OnOff power switch 7. Caps Lock and Battery indication 8. Compatible with Logitech Flow enabled mouse 9. Battery: rechargeable Li-Po (1500 mAh) battery 10. Keyboard size: 433.85x131.55x26.1mm, weight: about 828g 11. Logi Bolt USB Receiver: Size: about 6.6x14.4x18.4mm Weight: about 2g Requires USB-A port: Windows 10 or higher, Mac OS 10.15 or higher, Chrome OS, Linux