100% Brand New and High Quality!Note:Insert the connecter first.? 3 DPI can be adjusted: 1000DPI， 1200DPI， 1600DPI ( If you feel the mouse is moving too slowly or too fast， please clicking the small rectangular white button in the middle to adjust the DPI)? Power: 2 x AAA battery (not included) First， insert the connection to your PC . After that insert 2 x AAA battery. Wait a while to use the mouse. Note， insert the connecter first.Then， adjust the DPI button which is behind the Mouse roller. It has 3 DPI can be adjusted: 1000DPI， 1200DPI， 1600DPI. Adjust to the best position.Features:? 100% Brand New. ? 6 Colors for your choice: Black， White， Orange， Green， Pink， Blue ? Operation systems: Windows 2000， Me， XP， Vista， Win 7 and Mac ? Power: 2 x AAA battery (not included) ? 3 DPI can be adjusted: 1000DPI， 1200DPI， 1600DPI? Rated operation current: 15mA， 1.5V ? Ergonomically designed， comfort grip. ? Micro-receiver. ? Decent and modern design. ? Ideal laptop companion for home and office use. ? 2.4GHz wireless transmission up to 10 meters operating distance. ? Built-In mouse memory， no recording is needed after battery replacement. ? Including Scroll Wheel， Page Forward and Page Backward buttons for easy Internet Surfing. ? Intelligent connectivity， no need to code， plug-and play. ? Note: Due to the difference between different monitors， the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. Thank you! Package Content: ? 1 x 2.4GHz Wireless Portable Optical Mouse ? 1 x USB receiver *Remarks: NOT include box or retail packing (Item will be wrapped safely in bubble envelop).