Mice & Trackballs Description: Energy saving design Light weight, easy to take with Ideal for home or office use. 2.4GHz wirele mouse optical mouse Kinesiology ergonomics design, fashionable and practical Smooth hand touch and suitable for both hands With USB receiver, plug and play, easy to use Optical tracking technology, works on many different surfaces Type: Optical Mouse Mouse size: 100-120mm computer connection: wirele Applicable device: laptop computers Photoelectric resolution: 1200 (dpi) Number of keys: 6 (key) Interface: USB Wirele transmiion frequency: 2.4GHz Resolution adjustable: third gear and below Operating distance: 8 (m) Power: 2 *AAAbattery (not included) Color: Black, Red, Grey, Blue Specifications: Energy saving design Light weight, easy to take with Ideal for home or office use. 2.4GHz wirele mouse optical mouse Kinesiology ergonomics design, fashionable and practical Smooth hand touch and suitable for both hands Package Included: 1 x Wirele Mouse 1 x USB Receiver Notes: Due to the difference between different monitors, the pictures may not reflect the actual color of the item. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. Please leaving a meage before you give the bad feedback, if the products have some problems. Thanks for your understandings. Specifications: Energy saving design Light weight, easy to take with Ideal for home or office use. 2.4GHz wirele mouse optical mouse Kinesiology ergonomics design, fashionable and practical Smooth hand touch and suitable for both hands Package Included: 1 x Wirele Mouse 1 x USB Receiver