Sony WH-1000XM4/B Wireless Noise Canceling Over-Ear Headphones w/ Google Assistant - Black (Retail price: $349) What's included: - Headphones - USB Type-C charging cable (unbranded) No case, no other accessories included. Come in non-retail, bulk packaging. Manuals and other documentation can be found on the manufacturer?s support site. Specifications: Headphone Type: Closed, Dynamic Driver Unit: 1.57" dome type Magnet: Neodymium Diaphragm: Aluminum Coated LCP Frequency Response: 4 Hz - 40,000 Hz Battery Charge Method: USB Battery Charge Time: Approx. 3 Hours (Full Charge) Bluetooth Version: 5.0 Volume Control: Touch Sensor Input: Stereo Mini Jack Weight: 9 oz. Industry-leading noise cancelation Industry-leading noise cancellation technology means you hear every word, note, and tune with incredible clarity, no matter your environment. These noise canceling headphones feature additional microphones that assist in isolating sound for a reduction of even more high and mid frequency sounds. The technology that makes it happen Dual noise sensor technology, featuring two microphones on each earcup, captures ambient noise and passes the data to the HD Noise-Canceling Processor QN1. Using a new algorithm, the HD Noise-Canceling Processor QN1 then applies noise-canceling processing in real time to a range of acoustic environments. Working together with a new Bluetooth Audio SoC (System on Chip), it senses and adjusts to music and noise signals, as well as acoustic characteristics between the driver unit and ears, at over 700 times per second. Optimizing noise canceling To maximize noise-canceling performance, the WH-1000XM4 headphones incorporate two technologies: Personal Noise-Canceling Optimizer, designed specifically for you, and Atmospheric Pressure Optimizing, designed specifically for air travel. Ambient Sound Control Adjust ambient sound with the Sony | Headphones Connect app to cancel noise while still allowing essential sounds, like overhead announcements, through when you're listening on the move. Wireless freedom, premium sound LDAC transmits approximately three times more data (at the maximum transfer rate of 990 kbps) than conventional BLUETOOTH audio, allowing you to enjoy High-Resolution Audio content in exceptional quality, as close as possible to that of a dedicated wired connection. Sound you can believe in A built-in analog amplifier integrated in the HD Noise-Canceling Processor QN1 realizes an unmatched signal-to-noise ratio for low distortion and exceptional sound quality for portable devices. Powerful 1.57" drivers, with Liquid Crystal Polymer (LCP) diaphragms, make the headphones perfect for handling heavy beats and can reproduce a full range of frequencies up to 40 kHz. Real-time restoration of all your compressed files Using Edge-AI (Artificial Intelligence) co-developed with Sony Music Studios Tokyo, DSEE Extreme? (Digital Sound Enhancement Engine) upscales compressed digital music files in real time. Dynamically recognizing instrumentation, musical genres, and individual elements of each song, such as vocals or interludes, it restores the high-range sound lost in compression for a richer, more complete listening experience. Smart listening technology to enhance your listening The WH-1000XM4 headphones use an array of smart technologies to create a seamless, hands-free listening experience. For example, simply start speaking to automatically pause your music in Speak-to-Chat, or enjoy adaptive playback thanks to the proximity sensor and two acceleration sensors that detect whether your headphones are being worn or not. For everyday convenience, just Speak-to-Chat As soon as you speak to someone, Speak-to-Chat automatically stops the music and lets in ambient sound so you can conduct a conversation?handy if you want to keep your headphones on, or your hands are full. Based on Precise Voice Pickup Technology, this smart feature uses five microphones built into your headphones and advanced audio signal processing to recognize and react to your voice. And once your chat is over, your music starts playing again automatically. Adaptive Sound Control automatically adjusts to whatever you do Adaptive Sound Control is a smart function that senses where you are and what you're doing, then adjusts ambient sound settings for the ideal listening experience. Be smarter with Voice Assistant Manage your day, just by asking your assistant. Enjoy entertainment, connect with friends, get information, listen to music and notifications, set reminders, and more. Works with Google Assistant and Amazon Alexa Wear all day in total comfort WH-1000XM4 headphones blend sophisticated style with exceptional comfort. Super-soft, pressure-relieving ear pads in foamed urethane evenly distribute pressure and increase ear/pad contact for a stable fit. And with a lighter-weight design, you'll barely notice you're wearing them. All day power and quick charging With a huge 30 hours of battery life, you'll have enough power even for long trips. And if you need to top up in a hurry, you can get 5 hours' worth of charge after just 10 minutes with the optional AC adapter. Clearer hands-free calling Conversation flows freely with easy, hands-free calling. Leave your phone where it is, just speak with a double tap. Thanks to Precise Voice Pickup Technology, which combines five built-in microphones with advanced audio signal processing, WH-1000XM4 delivers clearer voice quality to the other person on the phone. Multipoint connection For total convenience, WH-1000XM4 headphones can be paired with two Bluetooth devices at the same time. So when a call comes in, your headphones know which device is ringing and connect to the right one automatically. You'll also be able to quickly, smoothly switch your headphones to either of the two devices at the touch of a button. ________________________________________________________________ Important information: For security reason, to prevent frauds, we put identification marks on all our products. All returned items are subject of detailed inspection. All fraud returns will be reported and declined with no refunds.