The VI wireless earphones from Israel’s VI Technologies provide you with a real-time fitness coach, biometrics (heart rate, SPO2 rate, speed and step rate) and premium sounding music in time with your step rate. The company, previously known as LifeBeam (see here), has just raised $20 million.
https://www.calcalistech.com/ctech/articles/0,7340,L-3740910,00.html