Powerful Noise ReductionAdvanced active noise reduction technology effectively blocks ambient noise for an undisturbed listening experience.Wireless and ConvenientSupports Bluetooth connection, provides up to 30 feet of wireless streaming transmission distance, and built-in microphone supports hands-free calling.Comfortable FitErgonomically designed in-ear headphones with adjustable silicone earplugs and memory foam earmuffs ensure long-term wearing comfort and stability.Long Battery LifeA single charge can provide up to 6 hours of playback time, and with the portable charging box, it can provide an additional 18 hours of battery life.Built-in MicrophoneEquipped with a high-definition microphone, it supports hands-free calling function, making communication more convenient.