The identical trackball (for that is what it is) is also marketed on Amazon as the One Finger Mouse. The average of about 20 reviews for it is 3.5 stars. One should read these reviews, as the first review here is not representative.It is designed for those who need a small hand-held cursor control device, especially when a work surface is unavailable, as when traveling.
A few had problems with it, either mechanical, or not liking the design, but most found it helpful for its ergonomics (repetitive motion syndrome relief), and no need for a surface to operate it. Few thought it perfect, but most were satisfied; it is the only TRACKBALL of its kind, and very inexpensive, so one can hardly expect perfection. The biggest downside to me, is that one has to put it down to touch type: then I'm forced to revert to the inferior touch pad. The trackball is GREAT for browsing, and SO much better than my touch pad.
I found mine to be easy to master, and wonderful for cramped situations where there is no desk space for a mouse, especially in a car or aircraft, or when luggage space is at a premium. Seated at my desk, I use a large desk-top trackball for its greater precision, but for travel, or for use while standing (eg using a projection screen), the One Finger Mouse is quite adequate.
Click Here to see more reviews about: USB type A Finger Trackball (Black)
Product Description:
USB Black Finger Track Ball. Features: Off-table reducing the harm of radiation and body fatigue owing to using the mouse for a long time. Can be operated in various ways to avoid harm of palm joint or muscles Free and comfortable operation ideal for using on planes trains and cars 3D Page scrolling function. Meeting FCC CE UL SA and TUV requirements. System Requirements: Compatible with Windows 95 / 98 / Me / NT / 2000 / XP.
Buy cheap USB type A Finger Trackball (Black) now
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