JBL T450BT Extra Bass Wireless On-Ear Headphones with Mic (Black) Colour:Black   Colour:Black Powerful big-stage bass and no strings attached. Introducing JBL T450BT on-ear wireless headphones. They’re flat-folding, lightweight, comfortable and compact. Under the hood, a pair of 32mm drivers punch out some serious bass, reproducing the powerful JBL pure bass sound you’ve experienced in much bigger venues. Music and call controls/microphone are placed on the ear cup. Because your music should go where you go, you’ll get up to 11 hours of uninterrupted audio playback on a single charge.