Well bad, let's start with that. It can track your progress to ensure you reach your full potential. The design is good and the device plays well with your native apps for the most part. Strava is what I like to use with it and I haven't had any issues yet. What I didn't like is the (size) they offer. It wasn't clear what I was getting. They suggested a medium and 10. Reading the question forum, someone asked the same thing and the middle is one sensor (which I have Cadence) and 10 are both sensors. I think that's a terrible way to separate the two, but I hope it helps you make a decision. If I were to buy again I would take 10 or both sensors for your bike. I also don't know why they don't let you choose which sensor you get. Either way, a computer aid like this is a good thing to help you stick to your goals while still getting a good workout.
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