“Is this watch the model with heart monitor on the watch or does it require the chest strap?”
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The fēnix 3 can be a bit confusing because there are so many versions. We’d like to explain which model is which by our part number which is currently searchable on the Best Buy website. -Part number: 010-01338-70 This is the fēnix 3 HR, this model has a built in optical heart rate right on the wrist, it can be used with a chest strap HRM. It also has the sapphire glass on the watch face. -Part number: 010-01338-25 This is the fēnix 3 Sapphire (a step above the regular fēnix 3 because of its sapphire lens/watch face.) This model does not have an optical HRM built in. You must use the HRM chest strap that is included in the buddle version. For further questions please contact our support in the following link: www.garmin.com/support ~JH
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