Sony - Wireless MDR-XB70BT Extra Bas Headphones
Long battery life
The built-in battery gives you nine hours of wireless playback so you can listen all day.
Lots of heavy beats
Get your daily dose of bass on the go. EXTRA BASS ™ sound improves the low frequencies so that the rhythm becomes powerful and significant.
DRIVER UNIT: 12 mm (dome type)
FREQUENCY CURVE: 4 Hz-24,000 Hz
VOLUME REGULATION: Yes
USE TIME: Max. 9 hours
CHARGING TIME: Approx. 2.5 hours