airline earphones - I-21

Model Number: I-21
Style: In-Ear
Material : ABS
Plug: 3.5mm or 2.5mm single pin or dual pin or foldable pin Optional
Impedance : 32 ohms or 300 ohms Optional
Communication: Wired
Use: Aviation
Cable length : 1.2M ± 10%
Speaker : 27 mm ferrite magnet
Sensitivity: 102 ±3dB/mW at 1KHz
Frequency range : 20-20,000 Hz
Certification: CE,UL,SGS
Made in China