Item Type: Wireless Mouse_x000D_ Material: ABS_x000D_ Connection with Computer: BT_x000D_ BT Version: BT5.0_x000D_ BT Name: BT5.0 Mouse_x000D_ Signal Transmission Distance: Approx. 10m/ 10.9yd_x000D_ Optical Resolution: 800-1200-1600dpi_x000D_ Number of Keys: 6 (keys)_x000D_ Working Method: Photoelectric_x000D_ Wheel Direction: Four-Way Wheel_x000D_ Battery Specification: 2 x AAA Battery (Without)1Mouse movement, smooth, no burrs, professional optical positioning technology, more precise positioning. 2Unique intelligent circuit management design, making the mouse more power?saving. 3The mouse refresh rate reaches 125MHz, and it is used smoothly without delay. 4High?performance intelligent wireless technology, using frequency hopping transmission, strong anti?interference ability. 5The appearance design is stylish, ergonomic design, and comfortable to touch.Ship without battery.1 x WirelessMouse