- 11.9mm Closed Dynamic Driver
- Up to 15 Hours of Playback
- Built-In Mic for Hands-Free Calling
- Built-In Voice Assistant Button
The WI-XB400 EXTRA BASS Wireless In-Ear Earphones from Sony plays your favorite music through its 11.9mm drivers while enhancing low-end frequencies for deep and thumping bass. Even with a bass boost, Sony's audio engineering is designed to maintain vocal clarity. Your audio is received wirelessly via a Bluetooth-compatible mobile device, and the earphones have enough power for up to 15 hours of continuous playback.
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