A4 OP-560NU V-TRACK USB BLACK
Product ID: 44927
Mnfr. Part#: OP-560NU 3 KEY V-TRACK
• Sensors: Optical
• Type: USB
• Movement Resolution: 1000 DPI
• Buttons: 3
• System requirements: Windows XP / Vista / 7 / 8 / 8.1 / 10
• Warranty: 12 Months
https://www.a4tech.com/product.aspx?id=14
A4 OP-560NU V-TRACK USB BLACK