Harman Kardon LifeBeam Vi Wireless Headphones Black.

Vi is the world’s first true A.I. personal trainer. Vi utilizes leading aerospace-grade biosensors, hi-fi sound quality, an elegant ergonomic design and the ability to learn and grow with each user. Vi with Harman Kardon audio features: AI engine for personalized fitness insights and plansAerospace-grade biosensors to such as heart rate, HRV, motion, elevation, environment and moreHigh-fidelity sound by Harman/KardonCustomized ear fittingsBattery power for a full day activity (~2 times more than most wireless earphones) Win Every Run Every run counts Vi’s personal coaching gives you a sense of progress, every run. Run with the community Race virtually and get real-time updates for extra motivation. Earn Achievements Collect rewards as you become a more consistent runner. The best running app for 2019″ Men’s Health Show More Show Less