5mW 650nm Red Laser Pointer Single-Dot-Beam Pen-Shape Black with 2 * AAA Battery - Cool Laser Pointers
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200mW 532nm Green Laser Pointer Pen with 18650 Battery - Laserpointerpro
Amazon.com : LaserMax Lithium Batteries for Uni-Green, Micro and CenterFire Series Lasers LMS-2X13NC, (2 batteries) : Red Dot And Laser Sights : Sports & Outdoors
Review: LaserCube, the world's smallest – and first – battery-powered RGB laser projector