Item Type: Wireless Mouse_x000D_ Material: ABS_x000D_ Connection with Computer: USB_x000D_ Wireless Transmission Frequency: 2.4Ghz_x000D_ Signal Transmission Distance: Approx. 10m / 393.7in_x000D_ Optical Resolution: 800-1200-1600DPI_x000D_ Number of Buttons: 4_x000D_ Working Method: Optical_x000D_ Wheel Direction: Four-Way Wheel_x000D_ Battery Specification: 2 x AAA Battery (Without)1Has fashionable appearance, and the design of the mouse accords with ergonomics and feels comfortable. 2This smart mini receiver can be quickly connected to the computer, and is easy to operate and easy to use. 3Uses professional optical positioning technology, which makes the positioning of the wireless mouse more accurate. 4Adopts unique intelligent circuit management design, which makes the mouse more power?saving. 5Made of high?quality materials, and this mouse is sturdy, durable, not easily damaged, and has a long service life.Ship without battery1 x WirelessMouse 1 xUSB Receiver