Any mention of "us," "we," "our," etc is by Sennheiser, not AV One. 2 Years Local Warranty. For the ultimate listening experience. Get the next generation MOMENTUM 4 Wireless that is inspired by music. In The Box MOMENTUM 4 headphone Carry case USB-C charging cable Audio cable 3.5mm and 2.5mm jacks Airplane adapter Features Sennheiser Signature Sound Customised Sound Adaptive Noise Cancellation Transparency Mode Premium Comfort Top-Tier Battery Life (Up to 60-hours) Crystal-Clear Calls Adjustable Transparency Mode Sennheiser's Signature Sound Discover best-in-class sound with our audiophile-inspired acoustic system. Superior Sound Enjoy your favourite music like never before with our audiophile-inspired 42mm transducer system that delivers brilliant dynamics, clarity and musicality. Your way Make the sound perfect for you using the built-in EQ, presets, sound modes, and Sound Personalization feature, which tailors the audio to your individual hearing. New Adaptive Noise Cancellation and Transparency Mode Go from total immersion to situational awareness with just a touch. Full immersion Our next generation Adaptive Noise Cancellation automatically adapts to ambient noise so you can stay immersed and hear every detail, even in noisy environments. Situational awareness Need to hear an announcement on the train or a question from your colleague? Just activate the versatile Transparency Mode at a touch to hear outside sounds without removing your headphones. Premium look & feel Enjoy exceptional comfort and streamlined style. Premium comfort The M4’s lightweight design features a padded headband and deep, yet soft, cushioned earpads to ensure exceptional and long-lasting wearing comfort. Perfect fit Meanwhile, the low-friction hinge mechanism easily adjusts to give you a great fit without placing excess pressure on your head. Smart & easy Let nothing stand in the way of your listening pleasure. Up to 60-hour battery life Keep on listening while you fly around the globe, with up to 60-hour battery life and fast charging capability that provides a further 6 hours listening in just 10 minutes. Never miss a beat Smart Pause halts playback when the headphones are taken off and automatically resumes when they’re back on your ears so you’ll never miss a beat, while Auto On/Off rapidly powers up the headset when it’s picked up and shuts down to save energy when not in use. Specifications Wearing style: Headband stereo headphones Ear Coupling: Around-the-ear, circum-aural Connectivity: Bluetooth 5.2 compliant, class 1, 10 mW (max) Transmission frequency: 2,402 MHz to 2,480 MHz; GFSK, π/4 DQPSK / 8 DPSK Supported Profiles: A2DP, AVRCP, HFP Codecs: SBC, AAC, aptX™, aptX adaptive™ Speaker Type: Dynamic Speaker Type: 42mm diameter Speaker frequency range: 6 Hz to 22 kHz Speaker sensitivity: 106 dB SPL (1 kHz / 0 dB FS) Total harmonic distortion (THD): Speaker: 30°C may lead to extended charging times Battery type: Built-in Lithium-Ion rechargeable batteries 700 mAh Power Supply: 5 V⎓, 800 mA max, USB charging via USB-C socket
