Mice & Trackballs Features: upport ergonomics, it is comfortable to use the mice Speed, as soon as poible to lift the maes of the difficult problems Wirele transmiion. Portable and weight light, very convenient to carry and store Adjustable gear settings, giving you a more convenient and quick gaming experience High quality ABS plastic material, durable and can be used for a long time Specifications: 1. Slim, ergonomically-designed 2.4 GHz wirele mouse, ideal for home or office use 2. Compatible with most laptop and desktop computers via USB receiver (packed in the mouse) 3. Optical tracking technology, works on many different surfaces 4. 16 wirele working channels, automatic frequency jumping 5. Frequency: 2402MHz-2480MHz 6. Wi-Fi Range: 10m app. 7. Color: Pink, Red, Green, Blue, White, Black ( each color have 2 version, send it by random) 8. Powered by two AAA batteries (not included) Package Contents: 1 x Wirele Mouse 1 x USB Receiver Cautions: 1. Operation distance is closely related to the environment. 2. The mouse will shut off automatically and enter sleeping mode for saving power when it/'s not used for a long time. To wake it up, pre the right or left button.