Specifications: Mini adapter, plug and play. Wireless transmission, the longest sensing distance up to 10-15 meters. Portable and light weight, very convenient to carry and store. Power switch for save power. With 3 Keys, including scroll wheel, page forward and page backward buttons for easy internet surfing. Type: Wireless Mouse Optical Resolution: 800/1200 DPI Operating Distance: Up to 10-15 Meters. Interface: USB Power Supply: 1 x AAA Battery (Not Included) Size: 8.5cm x 5.3cm x 2.7cm/3.35" x 2.09" x 1.06" (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 USB Receiver