JBL Tune 770NC Wireless Over-ear Noise Cancelling Headphone - Black | JBLT770NCBLK mixx There is still some energy

There is still some energy loss due to air friction as the rotor rapidly rotates

Speakers – Mono

Unbeatable crispness

resin Band Porcelain - infinity band - silicone - changeable Input Touch screen

JBL Tune 770NC Wireless Over-ear Noise Cancelling Headphone - Black | JBLT770NCBLK mixx There is still some energyProduct Description Your Music, Noise Free When your music is on, nothing else matters. The JBL Tune 770NC Adaptive Noise Cancelling wireless headphones deliver on that promise all dayand longer, while sparing you the unwanted noises. With up to 70 hours of battery life, youll easily get through a busy week of using them and still have enough JBL Pure Bass Sound to get you through the weekend. And if you do need a quick recharge, 5 minutes gets you an