Pure bass. zero noise. tackle your day one song at a time with the jbl tune 235nc tws. true wireless earbuds give you 40 hours of exceptional jbl pure bass sound, while the ergonomic. driver size (mm)6 number of microphones4 bluetooth version5.2 charging time (hours from empty)2 maximum music play time with anc off (hours)10 maximum music play time with anc on (hours)8 maximum play time (hours)40 ipxipx4 charging cable ambient aware built-in microphone hands free call jbl pure bass sound sweat proof talkthru true wireless active noise cancelling wireless water resistant charging case speed charge rechargable battery bluetooth what's in the box? 1 x jbl tune 235nc tws headphones 1 x usb type-c charging cable 1 x 3 sizes of eartips 1 x charging case 1 x quick start guide / safety sheet (s / i) 1 x warranty / warning (w / !)