The item is a simple and practical wireless optical mouse, which adopts advanced wireless V3.0 techonology with operating distance up to 10 meters, it’s compaible with most laptops or notebooks with fuction. The optical mouse is powered by 2pcs AAA batteries for durable and convenient use. With ergonomic design and adjustable DPI, it is really a wonderful wireless mouse for choice. Features - Color: Black - Shell material: Plastic - Size: Approx. 9.4 x 5.4 x 3.5 cm/ 3.7 x 2.12 x 1.37 inch ( W x H) - Compatible with almost all -enabled PCs, Laptop and Notebook , W98/W2000/XP/VISTA/Win 7/WIN 10/ / , etc. - Advanced wireless V3.0 techonology, with the wireless transmission distance up to 10 meters. - Powered by 2 x 1.5V AAA batteries (not included), easy to replace and durable to use. - Ergonomic design for comfortable to grip and use. - for both home, office and travel use. Specifications - version: V3.0 - Operating distance: 10 meters - Resolution ratio: 800/1200/1600 DPI - Power supply: 2 x 1.5V AAA batteries (not included) - Supporting : W98/W2000/XP/VISTA/Win 7/WIN 10/ / with built-in or your computer connects dongle. ( dongle not included) How to use 1. Please ensure that your computer support function. If not, please purchase dongle by yourself. 2. Place 2pcs AAA batteries into the mouse, toggle ON/OFF key to ON and press on left key, and right key at the same time, waiting for the indicator light to between red and blue. Then click search the mouse’s and add on the computer you will connect. Package list: 2 x Wireless Cordless Mini 3.0 Optical Mouse Battery Powered Adjustable 800/1000/1200/1600 DPI Gaming Mice For PC/ Laptop/ Notebook/ Tablet