Heshaoc 10x E10 3V / 0.3A 0.9W Light Bulb Miniature Screw Base Lamp Flashlight Torch Experiment Work Light (Box of 10) - - Amazon.com
100pcs E10 Bulb Light, G11 Screw Base Flashlight Bulb Lamps 3.5v 0.2a - Atv Parts & Accessories - AliExpress
Ruiandsion E10 LED Bulb 6-24V LED Flashlight Bulb 6V 9V 12V 18V 19.2V 24V Upgrade for Headlamps Flashlights Torch Bike Work Lights,Non-Polarity (Pack of 1) - - Amazon.com
File:Lightbulbs for flashlight.JPG - Wikimedia Commons
LIGHTBULB - National Torch Glass Replacement Flashlight Bulb