Product number AMOI F9 Bluetooth version Bluetooth 5.0 Noise reduction version CVC 8.0 Working distancewithin 10 meters Single ear capacity 60m Ah Charging capacity 3500m Ah Automatic boot Support Automatic matching Support Waterproof Support IPX 7 Music time 280hours Call time 300 hours One-click function Up & down music switching, music adjustment, play/pause, call rejection, one-click Siri