Comfortable Design: Beat the workday blues with music on Zeb-Thunder wireless headphone that comes in an ergonomic design a perfect fit and design for long hours use. Sensitivity : -113dB 3dB. Microphone impedance : 1.2k Soft & comfortable earcups: Listen to music, podcasts and more for long hours with soft ear cups making it super comfortable for daily wear, All this with long playback time of 60 hours in BT mode.Adjustable headband: Adust your headband to your comfortable best while you work or listen to music60hrs* Playback Time: Fall in love with the audio experience with 60* hours of playback time to keep you goingSuperior Sound Quality: Magnify every speck of sound with superior sound quality on Zeb-Thunder wireless headphoneMulti Connectivity Options: Be spoilt for choice with multi-connectivity options like like BT, 3.5mm AUX input and MicroSD cardCall Function: Enjoy online conference, online classes, calls hands-free with a built in mic on the headphoneStandby time 200 hrs