JBL Tour One M2, Adaptive ANC, Smart Ambient, Up to 50Hr, Pro Sound, JBL App, 4-Mic, Bluetooth Headset (Black, On the Ear). Advanced voice recognition technology reacts to your voice and pauses the music to enable quick conversations via TalkThru Activate Silent Now, and let the headphone's Noise Cancellation allow you to focus. Stay alert to the sounds of the world around you while enjoying your music. You can control the ambient sound levels and turning the Personal Sound Amplification button on through the JBL Headphones App to boost the conversations? volume with +15-20dB and adjust the L/R balance. Immerse yourself in JBL Spatial Sound and feel like being in a theatre, at a concert or in the studio with your favorite artist. Thanks to this proprietary technology, sound comes from virtually anywhere around you, no matter the source or the device you are playing from. Shape your audio to match your personal listening profile. Interactive customization tools use precise information about you and your preferences, to provide the exact sound curve that suits you best. JBL Headphones app allows you to customize the EQ, ANC, ambient sound control, find the best fit, control voice assistants and more. Auto Pause automatically pauses and resumes music when you take the headphones off, eliminating the need for doing so manually.