Product Description:The Quietest Headset Available Headsets are all about noise reduction and comfort, and the Telex Stratus 50 Digital excels in both areas. 50dB of noise reduction The Stratus is, quite simply, the quietest headset available today, with over 50 dB of total noise cancellation. It achieves this amazing number with digital signal processing technology that allows the Stratus to learn and adjust to the aircraft environment. This SmartSense™ DSP technology still allows higher frequency noises—like voices—to be clearly heard. Custom Comfort A custom fit produces ultimate comfort, and the Stratus is the most adjustable headset available. ComfortCam™ technology allows pilots to adjust headband tension, reducing clamping pressure. Thick, heat-sensitive foam ear seals molds to the ear (even with glasses), and pivoting ear cups ensure a proper seal. Other features: Cell phone/music adapter Auto shut-off to protect battery life Dual volume controls Reversible electret microphone Stereo or mono switch Weighs 18.5 oz. 5 year warranty Headset can be powered using your aircraft's electrical system (with the cigarette lighter adapter; included) or with the battery pack using four AA batteries (batteries included). Specifications Weight - 18.00 Power Source - Auto Shut-Off - Yes Stero/Mono - Both Volume Control - Dual Ear Seals - Foam Mic Boom - Flexible reversible Mic Type - Electret Warranty - 5 TSO'd - No Helicopter - No Made In - Active Noise Reduction - Yes ANR - 25 Passive Noise Reduction - Cellphone Interface - Yes Earcup Style - O Bag Included - Yes