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Title: Great product
Review: This is my third one of these. I purchased the first nearly 15 years ago. I love them, others hate them. Great if you have limited space to work with (or space unsuitable for a mouse - like glass, bumpy surface, etc).For the most part I have no real issues using the product. From time to time I need to do precise graphics work. Too much of this very fine control and my thumb can start to ache.The internals do get dirty and need periodic cleaning. The old models (like old mice) had wheels that got very dirty. This product is simpler, so less places for the dirt to hid and easier to clean. If you use handcream, or eat while working, then be prepared to clean more often.Full disclosure: I replaced the first of these because it had an old connector that was incompatible with the new computer I had purchased. I replaced the second because it got lost in a big move. So I may be on my third, but that is not due to a defect or due to the product wearing out.
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