Here is another smart wearable device that helps you become a better swimmer. The Phlex EDGE provides real-time heart rate data and stroke analysis alongside workout recommendations. The device is compatible with iOS and Android devices. It has a hydrodynamic design and works with the most popular goggles.
The EDGE uses sensors to track over 30 swimming metrics, including distance, calories, pace, cadence, distance per stroke, and endurance zones. You are alerted via haptic vibrations of your current heart rate zone, so you can maximize your training.[where to find it]