1.Wireless 2.4G Bluetooth 5.0: Both keyboard and mouse support dual mode connection. In 2.4Ghz mode, the wireless keyboard and mouse share one Nano USB receiver (stored at the bottom of the mouse). In Bluetooth mode, the keyboard can connect up to 2 bluetooth deivces, the mouse can connect one. Easy to connect and change devices by Fn1/2/3. Operating distance up to 26ft/8m. 2.Rechargeable Long Standby: Rechargeable keyboard built in a 200mAh lithium battery, the mouse built in a 500mAh one, 3 hours fully charged by supplied Micro USB charging cable (Do Not charged over 5V/2A). About 200 hours for continuous work and 1000 hours standby. Auto sleep function and ON/OFF switches help you to save power. Leave for 30 mins, the combo will sleep. Move the mouse or press any key to wake up. 3.Quiet Keyboard and Mouse Set: The keyboard comes with scissor switch keys provide smooth typing and less noise. ABS keycaps with matte texture, leave no fingerprints. The cordless mouse has noiseless left and right buttons. Adjustable 3level DPI, 800/1200/1600. Never worry about disturbing others. 4.Compact Ultra Slim Design: Compact 78key keyboard for space saving and portable. The small keyboard has a 0.20.4in (0.51cm) ultra thin ABS body. keyboard and slim symmetrical mouse, makes the combo easier to packing and moving. Good choice for travel, business trip, office, library, etc.