Scosche Rhythm 24 – Waterproof Armband Heart Rate Monitor HRM Optical with Dual Band ANT+ and BLE Bluetooth Smart…

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HYPER-ACCURATE – Patented optical sensor technology for highly accurate monitoring and measurement. Green + Yellow Optical Sensors Provide superior measurement with all skin tones.
WORKS WITH VIRTUALLY ANY DEVICE – Great for use with smartphones, tablets, smart and sport watches, exercise equipment and many other devices that support Bluetooth Smart or ANT+ heart rate data.
24 HOUR BATTERY LIFE – Extended use rechargeable battery allows you to workout for up to 24 continuous hours.
CUSTOMIZABLE – Change HR zones and modes in the RhythmSync app. Modes include Heart Rate Only, Running (Cadence + Distance), Cycling (Cadence), Swimming, Heart Rate Variability (HRV).
INTERCONNECTED ARMBAND DESIGN – The Rhythm24 has an updated quick-lock interconnected armband design to keep the Rhythm24 securely attached to your arm during intense workouts.