Make the most of your Flex Timer with the GymNext Bluetooth Heart Rate Monitor. Connect to the Flex Timer to display your heart rate, set heart rate zones. The Heart Rate Monitor features let you workout effectively by telling you exactly how hard you are pushing yourself so you can adjust your effort accordingly. This Heart Rate Monitor comes with a comfortable, waterproof chest strap, and a replaceable coil battery which lasts up to 12 months.
Trustpilot
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