Fully adaptive Active Noise Cancelling uses realtime audio calibration. Transparency mode lets you hear the world around you. IPX4 Rated sweat and water resistant earbuds. Up to 6 hours of listening time - 18 additional hours with charging case. Custom acoustic platform delivers balanced sound. Apple H1 chip delivers Automatic Switching Audio Sharing and Hey Siri. Flexible secure-fit wingtips support comfort and stability. Single multi-function button per side. Includes: 3 Silicone eartip sizes (S M L). Charging case. USB-C to USB-C Charging cable.