Andoer 2.4GHz Wireless Mini Optical Mouse pen-shaped 500 / 1000DPI adjustable for Android PC System Requirements Black Windows 2000 / XP / Vista / 7 Linux Mac OS Android OS (Electronics)
The concept is interesting, effective in a confined space without planne area (plane, car, ...) materials and design pouraient better. Ergonomics not well studied: distance between the thumb and not just major => tired quickly fingers. Lack of abilit
