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Casio WSD-F21HR finally adds a heart rate monitor - 9to5Google
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Got this Casio Pro Trek WSD-F21HR. WearOS, mil-spec durability, heart rate + other sensors useful in outdoors activities and most importantly dual layer screen that can show just the time, reputedly for
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Casio Pro Trek WSD-F21 HR Watch Review | aBlogtoWatch
Casio WSD-F21HR finally adds a heart rate monitor - 9to5Google
Casio Pro Trek WSD-F21 HR Watch Review | aBlogtoWatch
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Casio Pro Trek WSD-F21 HR Watch Review | aBlogtoWatch