•Up to 25 hours of battery life
•DSEE restores frequencies lost in compression to produce high-quality sound that's closer to the original recording
•Fine-tune your sound using the Sony | Headphones Connect app
•Splash-proof and sweat-proof with an IPX4 rating
•Easy hands-free calling and voice assistant
•DRIVER UNIT:9 mm
•FREQUENCY RESPONSE(BLUETOOTH COMMUNICATION):20Hz - 20,000Hz (Sampling frequency 44.1 kHz)