Meet the TYLT VÜ Pulse: a versatile Pebble Time accessory that brings heart rate monitoring and wireless charging to your watch. It also has a companion app that lets you view your workouts and sync your results to Apple Health and Google Fit. The heart rate monitor relies on the principles of photoplethysmography to provide you with heart rate measurements.
The VU Pulse tracks your heart rate over 30 minutes and 10 seconds in passive and active mode, respectively. You will be able to use it with your watch on any Qi compatible wireless charger. More information is available on Kickstarter.