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Amazon.com : Polar OH1 + Waterproof Optical Heart Rate Monitor with Swimming Goggle Strap Clip and Armband – HR Monitor with Bluetooth, ANT+ : Sports & Outdoors
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G-Tide Smart Watch R1, Answer/Make Call, 300mAh Big Battery Smartwatch, VC52 Heart Rate Blood Oxygen Temperature Fitness Tracker, Bluetooth5.2, Smart Watch for Android/Ios, IP68 Waterproof, Black - Walmart.com
![Polar OH1+ brings heart rate monitoring skills to your swimming goggles - Wareable | Sesiones de entrenamiento, Equipos de gimnasia, Cintas de correr Polar OH1+ brings heart rate monitoring skills to your swimming goggles - Wareable | Sesiones de entrenamiento, Equipos de gimnasia, Cintas de correr](https://i.pinimg.com/736x/b5/00/9c/b5009ca4e4f6e3251b38a32a0118fc9e.jpg)