1680 Wireless Mouse, 2.4G Silent Mouse with USB Receiver, Ergonomic Mouse, Optical Mouse, Portable Light Computer Mice for Notebook, PC, Laptop, Computer, Long Battery Life, 1000 DPI, Black Dear customer, Please note that 1680 and 1620 are exactly the same, only the names are different. 1680 and 1620 will be shipped randomly. Features: Ergonomic: Yes Model: 1680/1620 Power Efficient: Yes Working Mode: Optical Engine Connection Type: 2.4GHz Resolution: 1000 DPI Mouse Life Cycl: 5 Million Key-press Power Supply: AA alkaline batteries not included Size: 111.4L*63.8W mm System Requirements: Windows 10, Windows 8, Windows 8.1, Windows 7, Windows Vista, Mac OS with USB port Package Contents: 1*Silent Wireless Mouse with packing box 1*Quick start guide 1*Mini Nano receiverPut in the battery slot About this item: 1000DPI Optical Wireless Mouse basic optical mouse adopts mature wireless 2.4GHz connection method, stable anti-interference, widely compatible with laptop / PC / Computer.With HD1000 DPI tracking engine you'll enjoy responsive and smooth cursor control with the 1000 DPI high-definition optical tracking engine. Silent DesignThe 1680 wireless mouse is a silent mouse. When you are studying in the library, or when your child or husband is asleep, the silent mouse will bring you a peaceful environment and a comfortable experience. Effectively reduce the click sound by 90%, the data comes from the formal laboratory test report. Long battery lifeThe 1680 wireless mouse adopts a high-efficiency and energy-saving design, and one AA battery can let you use it for up to 12 months. It protects the environment and saves battery costs. When not in use, you can turn it off at the bottom of the mouse to achieve a longer-lasting use time Ergonomic DesignThe 1680 wireless mouse is ergonomically designed, allowing your hands to relax comfortably when using it. The light weight is very suitable for carrying out, and you will not feel tired after using it all day long. The matte surface gives you a very comfortable touch. 1 Year Quality Guranteed & Lifetime WarrantyWe are the designer and manufacturer of . Technology is committed to providing high-performance and high-quality peripheral products to users around the world. If you have any questions about the product you received, please don't hesitate to