Brand Name: kebidumei Battery Included: no Type: Wired High-concerned chemical: none Origin: Mainland China Operation Mode: Opto-electronic Hand Orientation: Right DPI: 5000 Package: Yes Power Type: Rechargeable Style: Backlight Certification: CE Number of Buttons: 3 Interface Type: USB Feature 1: gaming Feature 2: pc gamer Feature 3: mouse gamer Feature 4: gaming mouse Feature 5: Wired mouse Choice: yes