Amazon.com : https://www.amazon.com/gp/product/B003MGJI3E?tag=eatingwelldia-20
AKG K403 Semi Open Foldable Mini OnEar Headphone Black
Product Description :
3D - Axis Folding Mechanism Cable-15m
Frequency range-16Hz-21kHz
Rated impedance-32 ohms
Max input power-30 mW
Sensitivity-118 dB SPLV
