About this item Low distortion speaker listen to the sound quality，Customized external magnetic speakers, tuning Strong Transient Performance High definition speaker,phone calls work and chat,built-in high definition microphone, one-click to mobile phone calls, easy to achieve hands-free calls clear and loud dialogue, free hands The details are delicate, The frequency are distinct and you can enjoy the music details High transparent acrylic sh-ell high strength, good toughness, not fragile.Using high-strength acrylic material, the strength and light transmittance are better than plastic, and it is not easy to deform, bend, leave fingerprints and other problems 500mAh battery listen all day.It can stand by f or 450 hours under full battery, talk for8 hours and listen to music for 6hours, support charging and use