A bright and colorful round watch keeps fitness at its core with a digital display that links up to an included wireless ECG sensor belt to display average heart rate and calorie expenditure during your workout. A target zone visual produces an audible alarm once the optimal heart rate is reached. Approx. band length: 190mm. Approx. band width: 18mm. Approx. case diameter: 46mm. Buckle closure. Exercise timer and 10-exercise recall. Dual alarms. Backlight. Water-resistant to 5 ATM (50 meters). Plastic/acrylic. By PUMA; imported.