Features:

• Foldable headphones with both detachable and built in microphones. 1200 mm audio cable with 3.5 mm 
  4-pole (trrs) plug connectors. M-1 is perfect for use with OP-Z in headset mode, for easy and convenient
• Voice sampling. the headphones are compatible with any audio gear with headphone output. they have two audio jacks, one on each side. the flexible boom mic and the audio 
  cable can be connected to either.
• You can also daisy-chain several headphones to share the listening experience. whether you are on a plane, train or a bus, you can now share your music making sessions with friends.

Specs:

• Frequency response: 20 Hz - 20 kHz (mic: 100 Hz - 10 kHz)
• Driver sensitivity: 100 dB SPL ±3 dB @ 1 kHz
• Driver impedance: 32 Ω