Ergonomic design, comfortable hand feeling, can reduce fatigue.Low power and current consumption design, making battery used more longer.Can be used at home or in office for working or gaming.Item Name: Wireless Keyboard & MouseMaterial: ABSKeyboard Power Supply: 2 x AAA Batteries (Not Included)Mouse Power Supply: 2 x AAA Batteries (Not Included)Working Method: PhotoelectricDPI: 1200dpiFeatures: Wireless, Lightweight, ErgonomicKeyboard Size: 283mm x 122mm x 22mm/11.14" x 4.80" x 0.87" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes: (Batteries Not Included)1 x Wireless Keyboard1 x Wireless Mouse