Powerbeats Pro 2 has a redesigned acoustic architecture, upgraded venting to enhance your sound and comfort, and Personalized Spatial Audio with dynamic head tracking to fully immerse you in your music And each bud gives up to 10 hours of playback per charge. That’s countless miles or reps. Thanks to Fast Fuel, a five-minute charge gives you up to 90 minutes of playback. The updated earhook has been rebuilt with a super-light nickel-titanium alloy that is renowned in material design for its exceptional shape memory and flexibility. Powerbeats Pro 2 is also our very first product that is compatible with wireless charging. The charging case ( included in the box) is now 33% smaller for easy portability. Incredible sound. Incredible noise cancelling - Powerbeats Pro 2 delivers powerful sound for any training environment. Turn on Active Noise Cancelling (ANC) when you want absolute focus, and experience the best noise cancelling we’ve ever developed. Listen in Transparency mode when you need to hear the world around you Heart Rate Monitoring for workouts - Precision-crafted LED optical sensors pulse light over 100 times per second to measure your blood flow. All this can be relayed to your favourite fitness apps in real time — and of course you can turn heart rate monitoring off whenever you want. Powered by the Apple H2 chip - The updated sound profile, noise cancelling, Heart Rate Monitoring for workouts and exceptional battery life are all enabled by the efficient Apple H2 chip.