Check the listing for details. US 2-4 Pack 2.4GHz Wireless Optical Mouse with USB Nano Receiver for Laptop PC. Condition: New. Listed at 10.79 USD. USA Seller, Ship Fast! High precision 800-1200-1600DPI resolution, fast speed, quick reaction 2.4GHz wireless transmission up to 10 meters operating distance. Optical technology for Nano receiver in the mouse button. With USB receiver hidden in the mouse button. Elegant and ergonomic design, perfect to match your laptop or PC. Descriptions: USB Wireless Optical Mouse for Laptop PC Notebook has an effective distance in further distance to allow you work freely. And it adopts advanced and optical technology, high accuracy and reliability, and supports super long working life. Specifications: Model: WH315 Material: plastic Size: 100*60*36mm Tracking Method: Optical Number of Rollers: 1 Wi-Fi Range: 10m Type: 2.4G Wireless DPI: 800-1200-1600DPI Powered supply: 2 x AAA battery (NOT included) Number of Buttons: 3