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2. Helicopter Aircrew Breathing Device - Wikipedia

   en.wikipedia.org/wiki/Helicopter_Aircrew...

   The Helicopter Aircrew Breathing Device or HABD (also known as a Helicopter Emergency Egress Device HEED or SEA [clarification needed] [1]) is an item of survival equipment which was adopted by the military to increase the chances of survival for embarked troops and aircrew trapped in an aircraft which has ditched (crashed into a body of water).

3. Hearing protection device - Wikipedia

   en.wikipedia.org/wiki/Hearing_protection_device

   Various earmuff hearing protectors. Sound levels of some daily activities. A hearing protection device, also known as a HPD, is an ear protection device worn in or over the ears while exposed to hazardous noise and provide hearing protection to help prevent noise-induced hearing loss. HPDs reduce the level of the noise entering the ear.

4. Helicopter flight rescue system - Wikipedia

   en.wikipedia.org/.../Helicopter_Flight_Rescue_System

   The system is modular and various components can be attached or detached as the need arises. Examples of modular components include a rescue basket, an "aerial rescue platform" (commonly known as a "Bouwman bag"), and various rescuer harnesses. The line length can be adjusted for various conditions such as tree canopy.

5. We tested Zepp Clarity hearing aids and here's everything we ...

   www.aol.com/lifestyle/zepp-clarity-hearing-aids...

   Key features: — Over-the-ear design rests on top of the ears — Bluetooth connectivity for phone calls and streaming audio — Battery charges in three hours for up to 18 hours of use

6. Simplified Aid For EVA Rescue - Wikipedia

   en.wikipedia.org/wiki/Simplified_Aid_for_EVA_Rescue

   Astronaut Rick Mastracchio working with a SAFER system attached. SAFER. Simplified Aid For EVA Rescue (SAFER) is a small, self-contained, propulsive backpack system worn during spacewalks, to be used in case of emergency only. If an untethered astronaut were to lose physical contact with the vessel, it would provide free-flying mobility to ...

7. Assistive listening device - Wikipedia

   en.wikipedia.org/wiki/Assistive_Listening_Device

   Hearing aids are able to amplify and process these sounds, and improve the speech to noise ratio. However, if the sound is too distorted by the time it reaches the listener, even the best hearing aids will struggle to unscramble the signal. Assistive listening devices offer a more adaptive alternative to hearing aids, but can be more complex ...