Enhance your fitness journey with the Sigma™ PC 22.13 Digital Wrist Watch, paired with a Chest Belt for secure and accurate performance tracking. Featuring the STS transmission system, this wristwatch ensures digitally coded transmission from the chest belt to deliver ECG accurate results. Effortlessly monitor your fitness metrics on the easy-to-read display with large figures and pictograms. The automated function calculates the target zone, providing one target zone for effective workouts. The calorie counter, backlight, button lock, and water-resistant design add convenience and versatility to your fitness routine. Elevate your exercise experience with the Sigma™ PC 22.13, offering precision and reliability for your fitness goals.