Yes. You can connect the headphones to a mobile device without the app using the mobile device’s Bluetooth settings. However, you need the Bose app to fully enjoy all the features of the product, make settings adjustments, and download updates.

The controls on the left and right earbud surfaces are the same, and they include:• Swipe up or down for volume control• Tap once to play or pause content• Tap twice in quick succession to skip forward• Tap three times in quick succession to skip back• Press and hold the earbud surface to access a Shortcut. The default Shortcut function on both buds is to toggle back and forth between Quiet Mode (full noise cancelling) and Aware Mode (hear outside sound). You can add additional noise-cancelling modes at sound levels between Quiet and Aware using the Bose App. The Shortcut on one or both earbud

Bose QuietComfort Ultra Headphones also give you two options when it comes to audio EQ. Do nothing and the bass, midrange, and treble of whatever you’re listening to will be adjusted automatically to make it sound great. Or choose Equalizer in the settings of the Bose app to change the audio levels yourself to however you like them best. Either way, you’ll enjoy immersive sound at any volume.