Koss PortaPro specs

General

• Recommended Use The noise canceling feature keeps out ambient sounds on buses and airplanes. Plus, they are portable for easy transport.
• Recommended Use Portable audio system
• Additional Features Foldable

Headphones

• Headphones Type Headphones - Binaural
• Headphones Form Factor Semi-open
• Headphones Technology Dynamic
• Connectivity Technology Wired
• Sound Output Mode Stereo
• Response Bandwidth 15 - 25000 Hz
• Total Harmonic Distortion (THD) 0.2 %
• Sensitivity 101 dB/mW
• Impedance 60 Ohm
• Diaphragm Mylar
• Magnet Material Neodymium iron boron

Remote Control

• Type None

Connections

• Connector Type 1 x Headphones ( Mini-phone stereo 3.5 mm )

Miscellaneous

• Cables Included 1 x Headphones cable - 4 ft

Power

• Power Device None
• Battery None

Manufacturer Warranty

• Service & Support Limited lifetime warranty
• Service & Support Details Limited warranty - Lifetime