Casio USA - Set the pace for any adventure in cycling with the built-in heart rate monitor on the ProTrek Smart WSD-F21HR. http://bit.ly/ProTrek-WSDF21HRRD | Facebook
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Casio wsd-f20bk Bluetooth Black Sport Watch – Sport Watch (Black, Water Resistant, 50 M, Climbing, Cycling, Fishing, Running, 12h/24h, 4000 MB) : Amazon.co.uk: Watches
![Casio Pro Trek Smart WSD-F21HR adds heart rate monitor in effort to play catch up with competitors - dlmag Casio Pro Trek Smart WSD-F21HR adds heart rate monitor in effort to play catch up with competitors - dlmag](https://dlmag.com/wp-content/uploads/2019/08/casio_heart.jpg)