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  2. Precision-guided firearm - Wikipedia

    en.wikipedia.org/wiki/Precision-guided_firearm

    The three main technologies employed for long-range shooting—the bolt-action rifle, telescopic rifle scope and machined cartridge ammunition—were developed in the nineteenth century. The first bolt-action rifle was produced in 1824 by the German firearms inventor Johann Nicolaus von Dreyse. The first documented telescopic rifle sight was ...

  3. Unertl Optical Company - Wikipedia

    en.wikipedia.org/wiki/Unertl_Optical_Company

    Unertl Optical Company, Inc. was a manufacturer of telescopic sights in the United States from 1928 until 2008. They are known for their 10× fixed-power scopes that were used on the Marine Corps' M40 rifle and made famous by Marine Corps Scout Sniper Carlos Hathcock during the Vietnam War.

  4. The 7 best OTC hearing aids for seniors, according to ... - AOL

    www.aol.com/lifestyle/the-7-best-otc-hearing...

    The Lexie B2 Plus is a self-fitting hearing aid, which means that the settings are programmed for your specific hearing needs using the app's built-in hearing test that helps you find the perfect ...

  5. 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.

  6. Audiologists Say These Are the Best Over-The-Counter Hearing Aids

    www.aol.com/lifestyle/audiologists-best-over...

    CRE-C20. These newly-released OTC hearing aids are packed with prescription-grade technology for less than $1,000. The Sony CRE-C20 are incredibly discreet within the inner ear, though the tiny ...

  7. These are the best Bluetooth hearing aids of 2024 - AOL

    www.aol.com/lifestyle/best-bluetooth-hearing...

    The increased competition between prescription and OTC hearing aid makers has also turned the heat up on both sides of the fence to create the best hearing aids with the best, most advanced ...

  8. Vortex Optics - Wikipedia

    en.wikipedia.org/wiki/Vortex_Optics

    Vortex Optics is an American manufacturer of special optical equipments for hunting, wildlife watching, outdoor recreation, shooting sports and law enforcement and military. [1] Vortex products include binoculars , spotting scopes , riflescopes , reflex sights , holographic sights and other accessories.

  9. The 9 best rechargeable hearing aids, according to hearing ...

    www.aol.com/lifestyle/best-rechargeable-hearing...

    The hearing aid market has advanced by leaps and bounds since the FDA's 2022 regulatory change allowing hearing aids to be sold over the counter. The greatly increased competition between ...