The RA210-BT aviation headset combines superior audio, clear communication, and Bluetooth connectivity to your favorite device. With a PNR noise reduction rating of 24dB, the RA210-BT reduces noise, provides hearing protection, and quite simply, makes your flight more enjoyable. It's the perfect blend of performance, comfort, and features. The comfortable gel ear seals features the new Ear Seal System (E.S.S.) with a contoured ear seal base. This provides a much better seal when turning your head, sealing any gaps along the surface of your head and face. This feature provides improved audio and comfort, allowing undistracted navigation. One volume knob controls the conversation volume. The other knob controls your Bluetooth accessory volume effortlessly without having to reach for your device giving you a personalized listening experience. With a weight of only 20.4 oz, the RA210-BT might be the lightest headset you will ever wear. A full-flex, rotating mic boom allows you to wear the mic on the left or right side and position it in a comfortable spot in front of your lips while the noise-cancelling mic sends your message loud and clear. Features: Speakers: Clear Hear 50mm Audio Speakers NRR: 24dB Noise Reduction Rating PNR: 24dB Passive Noise Reduction Headband: Adjustable Stainless Steel Head Pad: Custom Fit Comfort Head Pad, featuring a space to fit over caps comfortably Ear Seals: All-Day Comfort Gel Ear Seals with E.S.S. comfort contour Mic Boom: Stay-Put Flex Boom Mic Muff: Wind Block Foam Plugs: Dual Nickel Plated Plugs Charging: USB-C port for Bluetooth operation Microphone: 15mm DNC (Dynamic Noise Cancelling) Mic Weight: Lightweight - only 20.4 oz Warranty: Full 7-Year Factory Warranty Includes: RA210-BT Headset Headset Bag Charging Cable