It's only useful when an object is close - like within 40 ...

It's only useful when an object is close - like within 40 feet or so. Otherwise it's too small to see because of the way the mirror compresses the field of view. The photo showing the product is pretty decieving because if that's how you have it positioned your body would be taking up most of the image so you have to figure out how to position your wrist on the handle bar to be able to see anything behind you.

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