KOSS Porta Pro

Portable headphones
■ Format: dynamic open type
■ Impedance: 60Ω
■ Sensitivity: 101dB SPL/1mW
■ Playback frequency range: 15-25,000Hz
■ Cord: straight/1.2m
■ Plug shape: 3.5φ stereo
■ Weight: about 60g( cable)