JBL Tune 530bt Headphones

Audio and connectivity driver size: 33mm dynamic drivers sound: jbl pure bass sound frequency response: 20 hz - 20 khz impedance: 30 ohm sensitivity: 102 db spl @ 1 khz bluetooth: version 6.0, with support for a2dp v1.4, avrcp v1.6.3, and hfp v1.8 profiles multi-point connection: yes battery and charging battery life: up to 76 hours of music playtime with bluetooth on fast charging: 5 minutes of charge for up to 5 hours of playback charging time: less than 2 hours from empty battery type: 3.7 v / 450 mah li-ion battery