PH-100L is with U-174/U Plug "listen-only" Helicopter headset. Provides the same comfort features and adjustable headband design as our standard noise-attenuating models.
Listen Only Headset
Comfort soft Foam Head Pad
Over-the-head Adjustable Stainless Steel Band,Adjust it to your needs
Comfortable half gel half foam ear pad
Volume control Switch
Passive NRR 23dB
coil cord terminated U-174/U Helicopter plug