Meet the Epson PS-100: an activity tracker that sits on your wrist and provides you with 24/7 heart rate monitoring. The device is capable of storing up to 20 days of data and helps you with your heart rate zone training. The device is compact and comfortable to wear day and night. It also has a mobile app and web portal to allow you to review your data.
The device has a simple design but helps you get more out of your workouts. Its LED lights turn on as you increase your aerobic activity. It provides you with personalized information to motivate you. Sets you back $129.99.