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?Bluetooth 5.3
?Digitally  suppress noise and provide natural environment enhancement
?Clear calls in loud environments
?Hear the surrounding sound when use Bluetooth  
?Three functional modes
?Six levels of sound adjustment
?Multiplication button
?Neck hanging and in-ear hook design
?Recharging battery and Type-C charging port
?Auto shutdown when not into ears
?Low-battery notification
?Multiple sizes of eartips
?Include storage  case 
?Battery up to 10 hours (Bluetooth)- 20 hours(Noise Reduction)