OneOdio Noise Cancelling Bluetooth Headphones use dual 40mm drivers and advanced ATS3003 Bluetooth V5.0 chip offer clear, natural, and balanced audio quality that’s decent for most music genres, a robust sound that perfectly balances clarity with just the right amount of bass. OneOdio updated ANC technology significantly reduces noise to help you focus on what you want to hear. OneOdio Noise cancelling headphones can provide up to 20 hours of music streaming (BT Only), 40 hours(ANC Only) and 15 hours(ANC+BT) play time after a fully charge (need 2.5 hours).