I bought a Polar CS300 about two months ago and I'm getting ready to send back the fourth watch to Polar. For those that don't know this monitor can upload your ride to Polars website via a sonic link. Well the first one had such a low volume it would take forever before I could get a good upload. Called Polar, sent it back and they sent me another one. Had the exact same problem. Sent it back, got another one. This one was fine as far a the uplink, BUT, about two weeks after I got it the speed quit showing, then the cadence would quit and the speed would start up. Then the heart rate would go crazy then the speed would quit. So on and so on. Sent it back, and got the fourth one yesterday. Went for a ride this morning, got back, tried to upload and nothing. Not a peep out of it. And they have the nerve to tell me they have had no problems with this watch. Ladies and gentelmen, don't waste your money.
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You can easily wear your CS300 wrist unit during the indoor fitness session or mount it onto your bike when cycling. With CS300, the proven, excellent polarpersona...
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