Havit i61N Active Noise Reduction Wireless Headphone

1.One click to activate active noise reduction, enjoy clear music without interference.
2.Active noise reduction wireless headphone, automatically eliminates the background noises under 20db.
3.Combining 40mm dynamic speakers, perfectly guarantees high fidelity sound.
4.4.A 2.5 charge gives you up to 20 hours of continuous playback