The Audio-Technica ATH-M20xBT:

• Bluetooth closed-back headphones
• Wireless on-the-go design with the same sound characteristics as the ATH-M20x wired professional studio headphones
• 40 mm driver tuned for improved low-frequency performance
• With low-latency mode for seamless streaming and gaming
  
• Stay connected to two devices simultaneously thanks to multipoint Bluetooth connectivity
  
• Up to 60 hours of continuous use after a full charge
• Up to 3 hours of use after a 10-minute quick charge (via USB-C port)
• Calls, music playback and volume can be controlled using the buttons in the left earcup of the headphones
• Voice control of the connected device, such as Siri or Google Assistant, can be activated from the headphones
• Excellent sound isolation in noisy environments thanks to over-ear design
  
• Professional-grade material for ear cushions and headband for long-lasting durability and comfort
  
• 1.2 m cable included for optional wired use

The ATH-20xBT from Audio-Technica is a closed headphone with Bluetooth connectivity. It is inspired by the wired headphone version ATH-20x but also features a microphone, Bluetooth connectivity, and controls for calls, music playback and volume.