With a mini receiver, the wireless mouse can connect to the computer and automatically connect to use, which is plug and play and convenient. It is very easy to carry this mini mouse that features slim and lightweight. The mouse, which has ergonomic design, fits the curve of the hand, making people feel comfortable. It is constructed of ABS material. The length of this product is 11.1cm and width is 5.5cm. It can be used for playing games, work, study and entertainment and so on. Item Name: Mouse Material: ABS Features: with Mini Receiver, Plug Play, Power-saving Rated Voltage: 1.5V Current: 10mA Connection with Computer: Wireless Photoelectric Resolution: 800-1200-1600DPI Number of Keys: 4 Interface: USB Wireless Transmission Frequency: 2.4GHz Ergonomics: Yes Adjustable Resolution: Three Gears Operating Distance: 10 Meters Working Mode: Photoelectric Wheel Direction: Four-way Wheel Battery: 1 x AA Battery (Not Included) Applicable Models: Notebook/Desktop Size Details: LxW: 11.1cm x 5.5cm/4.37" x 2.17"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Wireless Mouse 1 x Adapter