Meet the Epson PS-100: a smart wearable device that measures your heart rate and activity and helps you with heart rate zone tracking. The device is designed to be comfortable to wear day and night. It also has a mobile app and web portal to allow you to review your data. You can store up to 20 days of data in the device. The device is capable of capturing steps, sleep quality and calories burned.
When it comes to heart rate zone training, the device has LEDs that turn on as you intensify your aerobic activity. You also get personalized recommendations to stay motivated.