Never used, but tested. Installed new KORE Aviation Ultra Plush Silicone Gel Ear Seals. The size can be adjusted from extra small to large, which make this headset even suitable for children. Surprisingly good sound quality for this price. I planned to use it as headphones for passengers, but never used it.

Quality PNR (Passive Noise Reduction) Headsets For Affordable Aviation!

• PNR Aviation Headset with GA Nickel plated dual plugs for noise reduction.
• Molded cord for exceptional pull and flexibility standard.
• Noise canceling electret microphone with amplifier.
• Noise Reduction Rating (NRR): 24Db.
• Articulating flex boom for perfect microphone placement.
• Articulating Fulcrum on Ear pads for maximum comfort.
• Ribbed extra soft foam head pad & high density foam windsock for mic included for wind noise prevention.
• 3 year limited warranty on material and workmanship.

Earphone

• Size: Outer Diameter 50mm
• Weight: 14.8 gram
• Magnet: Materials Ferrite Size Φ20.5*4.5mm
• Impedance: 300Ω At around 1KHz
• Power Rating: Normal 30mW RMS Maximum 50mW
• Output Sound Pressure Level: 83±3dB /100mW /1cm With Artificial ear per channel; Average at 1.0K, 1.2K, 1.5K, 2.0KHz
• Resonance Fo: 100Hz
• Frequency Range: 100Hz~3000Hz
• Distortion: 5% Maximum at 1KHz /100mW /1cm
• Abnormal Sound Test: Must be Normal Tested by 3.0Voltage Sine Wave
• Load test: 30mW RMS White noise for 48hrs

Microphone

• Type: Noise Cancelling Condenser Mic.
• Case Material: ABS Plastic
• Sensitivity: -47±3dB (at L=50mm) (0dB=1V/Pa,1KHz)
• Impedance: Low impedance 680Ω
• Frequency: 300Hz~10KHz
• Max.operation voltage: 10V
• Standard operation voltage: 1.0V
• Current consumption: Max. 0.5mA
• Sensitivity reduction: Within -3dB at 1V
• S/N ratio: More than 60dB
• Boom Type: Universal Flexible

Cable

• 5 ft, Straight cord, PU shielded

Plug

• Microphone M642/5-1 (5.2Φ Stereo) Earphone M642/4-1 (6.3Φ Mono)