PH-100AC ANR aviation headset with Active Noise Reduction, Clear Hear performance audio speakers, dual volume control stereo, and easy access AA battery box with mono switch. Comfortable half Gel half foam ear seals;Adjustable spring steel headband;Clear Hear ANR audio technology blocking out the background noise;All new designed noise cancelling microphone and wind block foam mic muff.Pilots and flight instructors will enjoy the PH-100AC ANR aviation headset Brought all day comfort.

PH-100C ANR headset is a remarkable aviation headset.Have Hearing protection and crystal clear communications and unsurpassed comfort. A single 9V battery enhances the headset's passive Noise Reduction Rating (NRR) of 23 dB by an addition low-frequency electronic noise attenuation. The battery delivers up to 25 hours of reliable ANR noise suppression, and the unit boasts a user-selectable Auto Shut-off feature to prevent against inadvertent battery usage. With a super soft foam headpad and its trademark undercut half gel half foam ear seals for unequaled all-day comfort. The unit's electret noise-canceling mic delivers crisp, clear transmissions without background noise, and the stereo phones are ideal for in-flight audio entertainment.

PH-100AHC Active Noise Reduction (ANR) Headset is designed for Helicopter pilots who take flying seriously. Using the newest sound technology,Active noticeably reduces cockpit noise up to 52db. So you can fly longer, more comfortably, in a quieter environment. Battery Box With S/M Switch.The headset will shut-off automatically when the headset is unplugged from the battery box or is manually turned off using the toggle switch on the battery box. The headset will also automatically turn off when the radio or avionics master switch is turned off.

PH-100HC ANR Helicopter Headset reduces the unwanted ambient noise in the cockpit by using both Passive Noise Reduction (PNR) and Active Noise Reduction (ANR).use this technology, low frequency ambient noise is significantly reduced and important communication can be heard in a clear, crisp manner. PH-100HC will continue to operate as a PNR headset should the ANR become inactive for any reason such as low or no battery power.

PH-400AC (Carbon Fiber edition) is a limited series of aviation headsets. Which most of the structural elements including shells and their handles, are made of carbon fiber. The use of this material, apart from the unique aesthetics, has reduced the weight of the headphones.(only 9 ounces).Pilot first of all he would feel comfortable, especially after long hours of flights. PH-400AC is equipped with a standard Faux Leather earpads but other types of earpads are also available.