A4Tech FB45CS Dual Mode Rechargeable Wireless Mouse combines Bluetooth and 2.4GHz wireless connectivity for seamless switching between multiple devices. Featuring a precision optical sensor with adjustable 1200/1600/2000 DPI, support for up to three connected devices, a rechargeable battery, and a comfortable symmetrical design, the A4Tech FB45CS Wireless Mouse delivers smooth, accurate performance for work, study, and everyday computing. Compatible with Windows, macOS, ChromeOS, and Android, it offers reliable wireless freedom and effortless multi-device productivity.