1.With adjustable slider and soft padded headband allow you to get the most comfortable enjoyment. 2.Built-in 200mAh ultra-large capacity rechargeable battery, can work for 3-4 hours on a single charge. 3.Built-in dual 40mm large-aperture drivers, produce an immersive real-life music experience. 4.Enhance the sound insulation, easy to isolate external noise
