... Finger Mouse Quick DetailsProducts Status: Stock, Used Application: Desktop, Laptop Type: Wired Interface Type: USB DPI: 1200 Tracking Method: Optical Style: 3D, Mini, Finger ... operating the USB Finger Mouse at the same time2.Operate the USB Finger Mouse between your index finger and thumb;3 ... when you are double-clicking6.Contact the USB Finger Mouse light sensor tip to the surface for ...