1.BINAURAL COMMUNICATION ACCURATE VOICE PICKUPI CALL.Built-in smart chip picks up sound more accurately and can communicate easily even in noisy environment. 2.13mm composite speaker,Low power 6973 chip punk look.FULL COMPATIBILITY AND EASY PAIRING OF VARIOUS BLUE TOOTH DEVICES.Blue tooth 5.3 Low power consumption and low latency Compatible with Bluetooth devices such as mobile phones and notebook computers of various models. 3.With silicone lanyard,15m transmission distance.CD SOUND QUALITY.HIGH IMMERSION IS MORE ENJOYABLE.Left and right ear independent channel binaural stereo sound effect CD-grade sound quality, feel every detail of music. 4.Black and white exquisite packing with lamination film.