Smart screen technology Non-in-ear digital display/adjustable equalizer/Bluetooth 5.4 LCD full colortouch screen LCD full-color touch screen, free control of music playbacknoise reduction control, equalizer switching, etc. for OWs is completely open Based on ergonomics and data,the earphones are streamlined to fit the human ear better Automatic reconnectionwhen cover is opened Open the headset cover later toautomatically connect to the paired device Adaptive noise reductionAutomatically detect ear canal structure and wearing statusStay focused in any environment Product ModelHY-C02 Charging compartmentbattery capacity380mAh Transmission distance10m Charging portType-c Bluetooth versionV5.4 Headphonebattery capacity25mAh Music playbackabout 4 hours Charging time1h