Features: 1.Easy to use, plug and play, USB connection, simply plug it to the PC , it will be automiactically recognized and ready to use. 2.Crafted and designed to adapt to the natural complexities and motions of your hand and fingers. 3.38 keys one-handed keyboard with portable design,that you can carry it with you everywhere at anytime, great for one hand control. 4.Engineering hand-held design closely fits your wrist for long-term use without tiredness. 5.Long life span and good wear resistance, support a variety of light effects. 6.The clicky tactile feedback really brings your the true enjoyment of every hit! specification:Condition: 100% Brand New Item Type: Single Hand Keyboard Material: ABS Color: As shown in the picture Size: Approx.173x232mm/6.8x9.1in Number of Keys: 38 keys Interface: USB Operating Voltage: 5V Operating Current: < 200mA Applicable Systems: Fit for Windows98SE/ME/2000/XP/Vista7/WindowS8/Win10 Weight: Approx.542g/19.1oz PackageList:1 x Single Hand Keyboard