Need some more motivation? Try Vi. She’s an AI personal trainer powered by a cloud-based AI coaching engine. It uses Aerospace-grade biosensors to monitor heart rate, motion, elevation, proximity and touch, to provide real-time feedback. Vi has a real human voice & encourages you as you run, workout, & train. The system is sweat and water resistant, iOS & Android compatible, offers 4-6 hours battery life, and audio comes from high-quality Harman Kardon sound.