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2. These Are the Best Handheld Spotlights for Your Emergency ...

   www.aol.com/8-best-handheld-spotlights-home...

   Rechargeable LED Handheld Spotlight. This LE model features a front-facing spotlight and a large side lantern for added versatility. Its bright green color is easy to spot quickly in an emergency ...

3. Hand Held Products - Wikipedia

   en.wikipedia.org/wiki/Hand_Held_Products

   In 1996, Hand Held Products launched a mobile computer with 2D imaging technology, the Dolphin 7200. In 1997, the Hand Held Product's Dolphin portable computer was selected by the United States Postal Service to be part of their proof of delivery system, although a third party provided the manufacturing. The deal was the industry's largest ever ...

4. Searchlight - Wikipedia

   en.wikipedia.org/wiki/Searchlight

   ATS officers-in-training crew a 90 cm searchlight in Western Command, 1944. A searchlight (or spotlight) is an apparatus that combines an extremely bright source (traditionally a carbon arc lamp) with a mirrored parabolic reflector to project a powerful beam of light of approximately parallel rays in a particular direction.

5. High-intensity discharge lamp - Wikipedia

   en.wikipedia.org/wiki/High-intensity_discharge_lamp

   HID lamps are used in high-performance bicycle headlamps, as well as flashlights and other portable lights, because they produce a great amount of light per unit of power. As the HID lights use less than half the power of an equivalent tungsten-halogen light, a significantly smaller and lighter-weight power supply can be used. HID lamps have ...

6. Handheld projector - Wikipedia

   en.wikipedia.org/wiki/Handheld_projector

   Various manufacturers have produced handheld projectors exhibiting high-resolution, good brightness, and low energy consumption in a slightly larger format than pico since 2008. However, most handheld LED projectors, as of December 2017, have been widely criticized for having insufficient brightness for everyday use in a normally lit room.

7. Long-range acoustic device - Wikipedia

   en.wikipedia.org/wiki/Long-range_acoustic_device

   A long-range acoustic device (LRAD), acoustic hailing device (AHD) or sound cannon is a specialized loudspeaker that produces sound at high power for communicating at a distance. It has been used as a method of crowd control , which has caused permanent hearing damage , having an extremely high decibel capacity (up to 160 dB measured at one ...