BEEM United BeActiv S100-MD Wireless Earbuds Bluetooth Headphones with Heart Rate Monitor (Mandarin) BUILT IN HEART RATE MONITOR | BeActiv safely tracks your heart rate through dynamic continuous in-ear heart rate monitoring sensors built into the buds so you can remain hands-free and in the optimal heart rate zone while training FLEX-FORM CABLE | Its […]
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via BEEM United BeActiv S100-MD Wireless Earbuds Bluetooth Headphones with Heart Rate Monitor (Mandarin)
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