Finger Mouse / Ring Mouse Detailed Product Description Mini size, 1 / 3~4 / 1 weight of normal mouse; Wear it on finger; 800dbi, Support USB; Light sensor, can be used on different types of pad, cloth, can used on knee; Easy to move; As notebook PC accessories Convenient and novel   Features
* tiny and easy to carry in briefcase or pocket, especially for notebook use.
* expanded 16-bit data formation supports blazing fast moves with exceptional precision
* works on most translucent and transparent surfaces, and on most of marble and tile surfaces.
* works on many smooth paper surfaces such as photo papers or other papers with smooth coated surfaces.

Physical & mechanical characteristics
* button:2 buttons, scroll wheel
* resolution: Hardware enhanced up to 800 dpi
* connector & pin assignment: Usb
* operation distance:1.2m
* dimension:63 x 33 x 30mm
* weight (w/o box):37.5g
* color: Black, red, blue
System requirement:
* windows me/2000/xp. Ibm pc compatibles.