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UniqueFire 1508 IR 940NM LED Infrared Light Night Vision Flashlight, T38 (38MM) Convex Lens Focus Adjustable Torch with Interchangeable Torch Head System - - Amazon.com
Plastic LED lens diameter 28.5mm Plano Convex lens,led optical lens,Focusing lens flashlight|lens diameter|convex lensled optical lens - AliExpress
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UniqueFire 1504 940nm IR LED Light Illuminator Infrared Flashlight 67mm Lens Night Vision Torch for Night Hunting,Used with Night Vision Device (Infrared Light is Invisible to Human Eyes) - - Amazon.com
BigSun Rechargeable Spotlight, LED Flashlight High Lumens 1000000 Candlepower, 10800mAh Power Bank, With Red Lens, Side Floodlamp