, high-quality and flexible design. Arc touch designed, optical tracking technology, works on many different surfaces and Perfect usage , office or gaming. USB 2.4 GHz wireless foldable mouse. Plug and Play, no driver required. design saves battery life: curve to turn on and flatten to turn off. A red light flashes to show the battery is working. Complete with receiver and 2 AAA batteries. Perfectly fit for your PC and laptop. Light weight and easy to install. Type: 2.4Ghz Wireless,Touch Wireless mouse Interface Type: USB2.0 Product Specification: Switch Strength: 60+/-15GF Scroll wheel Strength: 80+/-20GF Button Strength:170+/-30GF :1200 Switch Life: 50 Compatible with /PC/AT//386/486/PENTIUM System supports: ,WIN95/98/2000//XP/NT Working Voltage: DC5+/-5% Working Current: Less than 100MA Working Temperature: -45 Celsius -50 Celsius Humidity: Less than 85%RH Interface: USB2.0 Number of button: 3 Button Life: 5 Power: 2x AAA Battery (Not include) : 1Pc colour:black Material: ABS Size: 13*5.7*1.7cm/33.02 inch * 2.24 inch * 0.67 inch Package Contents: 1 X Touch Mouse Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.