Firtsly, there is mentioned in the reviews that there is no speed meter. They don't differentiate for car speed like other units, and the only work around is setting a data box for radar which gives a numerical distance of the car behind you. Cases for use: Nature I bought this computer out of sheer curiosity as I'm returning to road cycling and have been testing a lot of the direct to consumer brands instead of paying premium prices for the big names. Amazon's Choice.
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