The SportsArt Fitness heart rate strap wirelessly transmits your heart rate to your SportsArt Fitness machine throughout your workout. Use this tool to tailor your workout for optimum training. The machine will read your heart rate and make workout program adjustments to keep you within a target training zone. Heart rate training can help you train for endurance, fat loss or stay within medically prescribed limits. The strap is comfortable, durable and adjustable. All SportsArt Fitness products are equipped to receive a wireless heart rate signal.