Specifications: Free wireless movement within 10 meters. The resolution frequency conversion button can switch the resolution frequency (1000dpi-1200dpi-1600dpi). Scroll up and down line by line. Automatic sleep power saving function, intelligent sleep to save power, more durable. Shortcut buttons can be used to browse the Internet or applications, and implement easily the "forward" and "back" functions on the toolbar. High-performance wear-resistant foot pad, easy to achieve obstacle-free sliding. Wireless mouse, no cable, a big screen can be operated on long distance, easy to carry, convenient for business trips. Using two AAA batteries to operate, it can save power and safety for a long time. Item Name: Wireless Mouse Material: ABS Tracking Method: Optical Interface: USB 2.0 DPI: 1000DPI-1200DPI-1600DPI (Adjustable) Power Supply: 2 x AAA Batteries (Not Included) Features: Wireless, Optical Mouse, Ergonomic, Power Saving Length: 8cm/3.15" (Approx.) Width: 4.5cm/1.77" (Approx.) Height: 3.5cm/1.38" (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 (Not Including Battery) 1 x Receiver