Appearance: Classic black mouse, smooth surface, prominent curve, good palm wrapping; three-dimensional keyboard, sharp edges, metal brushed panel, more stylish; Performance:800/1200/1600 three-speed switch, full of experience, automatic sleep mode, energy saving and environmental protection; 26 keys simultaneously press no conflict Wireless function:2.4g wireless technology, up to 10 meters; 360 degree operation without pressure; 1000mAh large capacity rechargeable lithium battery, 5 days at a time; Light effects: Cool rainbow backlit breathing lights, stylish blood; Applicable Model: Window SP home edition, window 7 Professional, window 8