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Feature

Superior sound - now with passive noise cancellation and enhanced bass
Built-in heart rate monitor measures your heart rate via your inner ear and delivers cylindrical-grade accuracy to ensure training at the right intensity level
Automatic Vo2 Max tracking ensures levels can be used to enhance your performance and further your training
Limited 3 year warranty against failure from sweat

Description

Now you can train even smarter with the worlds first sports headphones with automatic vo2 Max measuring. Test, monitor and analyze your physical fitness level with the Built-in Heart rate monitor and vo2 Max measurement - all while listening to superior sound quality music for the extra motivation you need to power you through your next training run or workout.