Used (normal wear), Workout more efficiently and burn more calories Comfortable armband accurately measures heart rate. No chest strap required
Orange Theory OT Beat Flex - Heart Rate Monitor for Sale in Fort Lauderdale, FL - OfferUp
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4Pcs Heart Rate Monitor Replacement Armband Strap Compatible with OTF, OTF Burn, Orange Theory Fitness, OT Beat Heart Rate Sensor, Heart Rate Monitors - Canada