10 of 13 people found the following review helpful
Great triathlete companion,
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This review is from: Polar RCX5 SD Heart Rate Monitor (Sports)
I previously owned a RS800x watch. In my opinion, these are the most significant improvements: Watch is easier to use (easier to get to most functions and switch from sports categories); I like the new view with 4 rows (instead of 3 as in the RS800x). I have to click less to see different stats while exercising; the Swim capabilities added a new dimension to my work outs. I was not able to use the RS800x in the pool, therefore I was not sure at what Heart Rate level I was exercising. Unfortunately, Polar does not have any sensor to measure swimming speed and efficiency. Hopefully, they will come up with another sensor for the swim.
All in all, I am very satisfied with this product