Customers find the heart rate monitor works well for running routines and keeping track of workouts, with one customer specifically mentioning its effectiveness for DDPY and Zwift bike workouts.

Customers have mixed experiences with the heart rate monitor's connectivity, with some reporting seamless and perfect pairing with various devices, while others mention difficulties with pairing and losing connection.

Customers have mixed experiences with the heart rate monitor's accuracy, with some finding it highly accurate while others report no accurate readings.

Customers have mixed experiences with the heart rate monitor: some report accurate readings, while others experience issues with readings consistently dropping to zero or becoming erratic.

Customers report significant reliability issues with the heart rate monitor, with multiple customers noting that it stopped working after 2 weeks of use, arriving dead on arrival, or failing after about a year and a half of use.

Customers find the heart rate monitor overpriced, describing it as a $50 replacement strap that's not worth the cost.

Customers report negative experiences with the heart rate monitor's battery life, noting that it needs replacement every 2 to 3 days and drains quickly.