Article: Sportline Launches DUO Heart Rate Monitors and Gives Consumers What They Want - Accuracy With or Without Chest Belt.

Sportline, the brand leader in personal fitness monitoring, has announced the official launch and availability of its DUO series heart rate monitors.

DUO is the company's latest and most innovative line of heart rate monitors which present wearers with a unique option when it comes to tracking their exercise intensity and effectiveness -- the choice to monitor their heart rate continuously or on demand.

Among DUO's most advanced features is its revolutionary ability to function with or without a chest belt. Wearers now have the option to use the chest belt during nonstop sports such as running, cycling or swimming, where continuous heart rate monitoring ...

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