Bose A30 for Helicopters with Powerful ANR, 3.5mm Jack Input, Bluetooth Enabled

Bose A30 Aviation Headset with Bluetooth, Lightweight Comfortable Design, Adjustable ANR and Noise Cancelling

Aviation headset, U174 plug, for helicopters
3-level adjustable powerful noise cancellation that can withstand aircraft engine noise
Operates on aircraft power alone (without ANC) even when the battery runs out
3.5MM (AUX) jack input included
Bluetooth function with pairing for up to 8 devices and simultaneous use of up to 2 devices. Can also be used as a PC headset.
Microphone and cable can be switched between left and right sides
Operates for up to 45 hours on AA batteries
Auto power-off function included

Overall good condition
Used for a few hours in a helicopter, so there are some signs of use. Otherwise, it has been used as a PC headset and mobile headset. No major scratches.

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Unmatched Comfort: The Bose A30 is a full-size, over-ear aviation headset with a lightweight design, 20% lower clamping force than the A20, and soft, comfortable ear seals.
High-Precision Focused Noise-Canceling Microphone: The Bose A30's microphone is designed for aircraft equipped with hot mic or PTT systems, enhancing clarity during transmission and reducing background noise.
FAA TSO and EASA E/TSO-C139a Certified: The Bose A30's robust design has passed 145 tests by Bose's engineering and quality assurance teams, ensuring durability in demanding flight environments.
Three Selectable Active Noise Cancellation Modes: Industry-leading active noise reduction with adjustable modes to accommodate various use cases and pilot preferences.

Headphones
Earphones
Headphone
Speaker
Mic
Noise cancellation
NoiseCalcellation
Bluetooth
Active Noise Cancellation