About Sound Quality Exclusive 45 mm drivers deliver legendary M50x studio sound. Proprietary 45 mm large-aperture drivers and dedicated amplifier deliver exceptional clarity throughout an extended frequency range, with deep, accurate bass response. Low latency mode reduces delay to keep audio and video in sync. Low latency mode improves synchronicity between audio and video for smooth streaming and gaming. Premium audio-grade components deliver pure, natural sound. The M50xBT2 is equipped with the finest audio components, including an AK4331 advanced audio DAC and dedicated internal headphone amp, to provide clear, high-fidelity sound. Compatible with high-quality AAC and LDAC codecs. In addition to SBC, the ATH-M50xBT2 is compatible with the AAC and LDAC premium wireless audio codecs. About Communication Dual mics and beamforming technology ensure crystal-clear call quality. Improved vocal pickup is achieved through the incorporation of beamforming microphone technology, resulting in clearer phone calls and communication with the built-in Amazon Alexa voice assistant. Sidetone circuitry. The sidetone circuitry of the M50xBT2 allows you to hear your voice in the headphones when making calls on most smartphones, making it easier to carry on phone and video conversations. Convenient mute control. You no longer have to hunt around for a mute option while on calls. The M50xBT2 microphone can be muted with a simple press of a button. About Utility Multipoint pairing Multipoint pairing function allows you to stay connected to two Bluetooth devices at once. Easy operation Control volume/mute, music, and calls, and access voice assistant (Amazon Alexa Built-in, Google Assistant, Siri) with the convenient buttons built into the left earcup. Google Fast Pair Fast Pair enables you to quickly pair the M50xBT2 headphones with an Android smartphone or other device. A single tap on your phone and you’re good to go! Wired connection Includes 1.2 m (3.9") cable for optional wired connection. About Long battery and Rapid Charge Up to 50 hours of use on a full charge Enjoy up to 50 hours of continuous use on a full charge and up to 3 hours of use on a 10-minute rapid charge via USB-C connection. About App More control with the latest A-T Connect app Use the A-T Connect app to activate low latency mode, adjust EQ (and save settings to headphones), change L/R volume balance, select desired voice assistant, locate misplaced headphones, change codecs, and more. Headphones Type Closed-back dynamic Driver Diameter 45 mm Sensitivity 99 dB Frequency Response 15 - 28,000Hz Impedance 38 ohms Microphone Polar Pattern Omnidirectional Type Condenser Sensitivity -38 dB（1V/Pa at 1kHz） Frequency Response 85 - 15,000Hz Bluetooth® Bluetooth® Version Bluetooth Ver.5.0 Operating Range Line of sight – approx. 10 m (33′) Other Battery DC 3.7V lithium polymer battery Charging Time Approx. 3.5 hours* Battery Life Approx. 50 hours continuous use Weight 307g without cable and connector Accessories included USB charging cable - 30 cm, USB Type-A / USB Type-C, Audio cable - 1.2 m/3.5 mm stereo mini-plug, protective pouch