The Powerbeats Pro 2 are the second generation of Beats' high-performance wireless earbuds, featuring Active Noise Cancelling (ANC), heart rate monitoring, and the Apple H2 chip.Comes with ACTIVE NOISE CANCELLING(ANC)A built in optical heart rate sensor and provides real time work out data. The earbuds feature adjustable, secure-fit earhooks made with a super-light nickel-titanium alloy, designed to stay locked in during strenuous activity. Five different ear tip sizes (XS, S, M, L, XL) are included to help achieve an optimal fit and seal.You get up to 10hrs continuous use lay on a single charge(8hrs with ANC on),they have rated IPX4 for sweat and water resistance l, Powered by Apple H2 chip and offer seamless pairing with apple devices but also work with Android via beat app,supporting Bluetooth 5.3and USB-C charging