JOYACCESS Wireless Keyboard Combo Full-Size Whisper-Quiet Wireless Keyboard and Mouse for Desktop in Ergonomic Design-Silver 2.4G Wireless delivers up to 10 meters connection; plug and play with unified nano receiver; Whisper quiet typing and clicking for both keyboards and mouse Real compact and slim keyboards combo greatly save you desk top space Low power battery indicators and multi-media hot keys provide convenience; 2pcs AA batteries for keyboard and 2pcs AAA batteries for mouse(included in the package) 3 adjustable DPI levels (800/1000/1200) provide precise trace at your own discretion.