Overview: Ergonomic design, professional optical positioning technology. Intelligent mini receiver, automatic connection. More than 16 million ID coding designs. Any 360 is controlled at a distance of more than 10 meters around the operating Angle. Unique intelligent circuit management design, resolution 800-1600dpi adjustable frequency. 3 million times button service life, click the better effect. Adopt the latest infrared light technology. Features: 1. Ergonomic design, stylish appearance, comfortable feel. 2. Professional optical positioning technology, more accurate positioning. 3. Intelligent mini receiver, automatic connection, no tedious code matching. 4. More than 16 million ID codes are designed to enhance the anti-interference features of the mouse. 5. Arbitrary Angle of 360 ° around, as far as 10 meters above the manipulation of the distance. 6. Unique intelligent circuit management design, so that the mouse more electricity. 7. Resolution 800-1600dpi adjustable frequency, enjoy your wireless free space. 8. System requirements: Windows / XP / Vista / 7 / Linux /and for MAC operating system. 9. 3 million times button service life, better click effect, improved comfort, no noise, quieter. 10. Adopt the latest infrared light technology. Specifications: Color: Black Grey Model: 3500L Wireless Mouse Photoelectric Resolution: 1200dpi (dpi) Interface: USB Key Number: 6 (key)--Left and right buttons, pulleys (can be pressed), forward and backward keys (for browsing web pages and folders), keys to change resolution (under pulleys) Battery: AAA*2 (without battery) Wireless Transmission Distance: ≥ 10m Wireless Carrier Frequency: 2402MHz-2480MHz Wireless Working Channels: 16, automatic frequency hopping Rated Working Current: 8-15mA@3V Key Stroke: 0.8mm Press Force: 60-70 ± 10g Button Lifetime: 3 million times Size: Approx. 10.5 * 6 * 2 cm / 4.1 * 2.4 * 0.8 in Weight: 48.6 g Package list: 1 x Mouse 1 x USB Receiver Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. 1、Ergonomic design, stylish appearance, comfortable feel. 2、Professional optical positioning technology, more accurate positioning. 3、Intelligent mini receiver, automatic connection, no tedious code matching. 4、More than 16 million ID codes are designed to enhance the anti-interference features of the mouse. 5、Unique intelligent circuit management design, so that the mouse more electricity.