JBL PRO SOUND: From rich, punchy bass to thrilling top notes, your music will always sound amazing thanks to the dynamic 40mm dynamic drivers. JBL Tour One headphones are hi-res audio certified, supporting frequencies up to 40kHz, to ensure that your music always sounds the best that it possibly can, wireless. TRUE ADAPTIVE NOISE CANCELLING: Struggle to find “your” space. Create your ideal environment with JBL Tour One True Adaptive Noise Cancelling. Immerse yourself in music, block out unwanted noises and focus on your goals. The Noise Cancelling level of these BT headphones adjusts to the change of environment in real time. With Ambient Aware and TalkThru you can hear environmental noises or have quick chats. 4 MICROPHONE FOR AMAZING VOICE CLARITY Enhance your voice, eliminate the noise. The JBL Tour One is equipped with 4 mics on the earcups to offer superior call quality. 2 adaptive beamforming mics ensure that the voice reproduction is clear and accurate; acoustic echo cancellation technology suppresses any echoes and cancels noises. Feel the pleasure of a face-to-face conversation, in every meeting or call. UP TO 50H OF BATTERY: Your JBL Tour One headphones keep you connected all day long, boasting 25 hours of playback with Noise Cancelling technology engaged and a whopping 50 hours with Bluetooth only. AMAZON ALEXA AND GOOGLE ASSISTANT: Activate your preferred Voice Assistant just by using your voice. Set your preferred Voice Assistant through the free My JBL Headphones App, that allows you also to set up you Alarm to fall asleep with music and wake up at a set time, optimize the Bluetooth settings, to get the best audio for music or videos, . customize the headphones EQ, and much more. Android 6.0 or higher is required for full access to Alexa features when using this device