ATH-SPORT90BT SonicSport wireless in-ear headphones feature 6mm high-sensitivity drivers with dedicated headphone amplifier for rich audio reproduction (20-25,000 Hz frequency response). These IPX5-rated sport headphones include 4GB internal memory for device-free playback and Bluetooth 5.0 connectivity. The lightweight (22g) design incorporates soft silicone eartips and fins in four sizes (XS-S-M-L) for secure fit during intense workouts. With 8 hours of battery life for built-in music player use and 6 hours via Bluetooth, they include magnetic earbud sensors that automatically pause playback when linked. The package includes eartips, ear fins, USB-A/USB-C charging cable, and carrying pouch.