Long Playtime with LED Charging Case -- Headset equipped with a 400mAh charging case and USB C charging cable to make carrying the headset and charge more conveniently. 400Hours super long standby bluetooth headphone.It can be fully charged in single 1.5H for continuously 12h call/music.With the charging case,you can totally get 400hrs standby.With LED display,you can easily know the remain power of the charging case. Noise Cancelling Headset with Microphone -- Combined with 2 built-in high-resolution omnidirectional HD microphones and professional bluetooth v5.1 technology,our bluetooth wireless earpiece can blocks out noise easily. Hand-free headset with dual noise cancelling mic allows you can enjoy the high clear call quality of phone calls or music while driving or listening.