Koss PortaPro specs (with Case)

General

• Packaged Quantity 1
• Recommended Use The noise canceling feature keeps out ambient sounds on buses and airplanes. Plus, they are portable for easy transport.
• Product Type Headphones
• Weight 2.1 oz
• Recommended Use Portable audio system,
  Home audio system
• Additional Features Foldable

Headphones

• Headphones Type Headphones - Binaural
• Headphones Form Factor On-ear
• Headphones Technology Dynamic
• Connectivity Technology Wired
• Sound Output Mode Stereo
• Frequency Response 15 - 25000 Hz
• Total Harmonic Distortion (THD) 0.2 %
• Sensitivity 101 dB/mW
• Impedance 60 Ohm

Remote Control

• Type None

Connections

• Connector Type Headphones ( Mini-phone stereo 3.5 mm )

Miscellaneous

• Cables Included Headphones cable - 4 ft
• Included Accessories 6.3 mm (1/4") stereo adapter,
  Carrying case

Power

• Power Device None
• Battery None