moofit Heart Rate Monitor Armband with Bluetooth & ANT+, Waterproof Optical Heart Rate Sensor Work with Zwift, Wahoo…

ACCURATE HEART RATE MONITOR – Optical heart rate technology to give you accurate heart rate, calories burned, distance, speed, pace.
BLE4.0 & ANT+ DUAL MODES- The HW702 supports both Bluetooth and ANT+ connection, works with most Bluetooth Smart and ANT+ enabled devices and equipment: watches, fitness equipment, smartphones, and tablets Breathable.
IP67 WATERPROOF – The best choice for fitness lovers. It can be used for handwashing, household chores and in the rain. However, it is not recommended for swimming or bathing.
COMFORTABLE ARMBAND – The breathable and light HW702 armband fits perfectly and comfortably around your arm, it is more comfortable than a chest strap.
APPS COMPATIBLE – Works with most mainstream Smartphone Apps including Wahoo Fitness, Zwift, Runtastic, Runkeeper, UA Record, Endomondo, Peloton, Map My Run, Komoot and Nike Run Club, etc.