M11 ANC Smart Noise-canceling Headphone Wireless 5.3, stable and high-speed transmission within 10m, smoothplay of audio and video; 40mm high-precision dynamic speaker unit, shocking heavy bass, giving you an immersive experience; All-inclusive protein leather earmuffs, soft and skin-friendly, no stuffy know how comfortable it is once putting it on. Folding design, foldable arms to increase the flexibility of storage outdoors; ANC supported to present emotional and pure audio, reveling in the charm of sound.