Features: 1.2.4G WIRELESS: Wireless keyboard and mouse uses 2.4G wireless mode to realize a computer connected to two devices, plug and play, free from the constraints of the cable. 2.HIGH PERFORMANCE: Wireless mouse using high performance chip, strong performance, no deviation of the pointer. Hollow design is easy to dissipate heat. 3.HIGH FOOTED KEYS: Wireless keyboard with round keycap design, high footed key position with small rebound and low noise. 4.MOUSE ADJUSTABLE: Wireless mouse supports three DPI adjustment (800, 1600, 2400), which can meet different hand speed and work flexibly. 5.WIDE COMPATIBILITY: Retro wireless keyboard mouse is compatible with major systems, easy to operate, just plug and play, suitable for office and study. specification:Item Type: Wireless Keyboard and Mouse Material: ABS Number of Keyboard Keys: 104 Keys Number of Mouse Keys: 6 Keys Connection Mode: Wireless Connection Keyboard Key Life: 10 Million Times Mouse DPI: 800, 1600, 2400 DPI Keyboard Battery s: 1 x AAA Battery (not Included) Mouse Battery s: 1 x AA Batteries (not Included) PackageList: 1 x Keyboard 1 x Mouse 1 x Receiver 1 x Instruction Manual