Dual mode wireless keyboard and mouse - 2.4 GHz and Bluetooth 5.0 connectivity: In 2.4 GHz mode, the keyboard and mouse share one Nano USB receiver stored at the bottom of the mouse. In Bluetooth mode, the keyboard can connect to up to 2 devices and the mouse to 1. Switch between devices easily with Fn1/2/3. Operating distance up to 26 ft / 8 m. - Rechargeable, long standby: Keyboard built-in 200 mAh lithium battery; mouse built-in 500 mAh. Fully charged in about 3 hours via the supplied Micro USB cable (do not charge above 5V/2A). Approximately 200 hours of continuous work and 1000 hours of standby. Auto sleep function and ON/OFF switches help save power. If idle for 30 minutes, the combo sleeps; move the mouse or press any key to wake. - Quiet keyboard and mouse: Scissor switch keys provide smooth typing with lower noise. ABS keycaps with matte texture resist fingerprints. The mouse features noiseless left and right buttons. 3-level DPI: 800/1200/1600 for precise control. - Compact ultra slim design: 78-key keyboard for space saving with a 0.2–0.4 in (0.5–1.0 cm) ultra-thin ABS body. Slim, symmetrical mouse included. Easy to pack and move, ideal for travel, business trips, office use, and library work.