Specifications:<br>Buttons: Left button， right button， rolling wheel<br>Operation systems: Windows 98， 2000， ME， XP， Vista， Win 7 and more<br>Color: Black，Blue，Red<br>Item size: 121 * 67 * 29mm (Approx)<br>Net weight: 120g  <br /></p> <br /></p><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/551a4d9035bdf8153964f46a-1-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/551a4d9035bdf8153964f46a-2-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/551a4d9035bdf8153964f46a-3-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/551a4d9035bdf8153964f46a-4-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/551a4d9035bdf8153964f46a-5-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/551a4d9035bdf8153964f46a-6-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/551a4d9035bdf8153964f46a-7-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/551a4d9035bdf8153964f46a-8-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><p style="text-align: center;"><p style="text-align: center;">