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Amazon.com : heart rate monitor accessories SIGMA chest strap for PC-watches with transmitter and elastic st : Cycling Heart Rate Monitors : Sports & Outdoors
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CHEST BELT 5 kHz uncoded / analog for SIGMA heart rate monitor, heart rate monitor size M-XXL | eBay
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Amazon.com : heart rate monitor accessories SIGMA chest strap for PC-watches with transmitter and elastic st : Cycling Heart Rate Monitors : Sports & Outdoors
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