• Accurately measures heart rate & provides voice guideance to users through Valencell's patented PerformTek® biometric technology
• Compatible with iOS or Android Smartphones which calculates heart rate, distance, time, and calories burned
• Listen to music, make/receive calls, and share exercise results with friends on Facebook
• Measures maximum oxygen uptake (VO2 MAX) and provides real time data and feedback of your exercises
• 2013 Red Dot Design Award winner for ergonomic product design