Product Description VEILZOR advanced 2.4 GHz wireless delivers the reliability of a cord plus wireless convenience for up to 10 meters, with virtually no delays or dropouts.The reliable wireless combo with a tiny receiver.A months keyboard and mouse battery life—with auto-sleep and on/off switch—lets you go years without the hassle of changing batteries.Dimensions (keyboard): 43.4*21*2.1cm(16.93*8.19*0.82in) Dimensions (mouse): 6.5*10.99*3.3cm(2.56*4.33*1.3in) Weight: 771g(27.2ounces) Operating System Compatibility: Microsoft Windows, Google Chrome OS Connection Types: 2-IN-1 USB-A/C Wireless Technology: USB Primary use: work, study Model name: PC418 Wireless Keyboard Mouse Combo Backlit: RGB Backlit Keyboard and mouse Battery: Built-in rechargeable 2000/650mAh lithium batter