Incandescent Bulb, Bulb Base Type Miniature Screw (E10), Bulb Housing Glass, Bulb Shape G4-1/2, Bulb Finish Clear, Color Rendering Index Not Applicable, Color Temperature 2400K, Lumens Not Applicable, Light Technology Incandescent, Shatter-Resistant No, Trade Number 406, Voltage 2.6V AC, Watts 0.8 W, Bulb Beam Angle Not Applicable, Rated Life 50 hr, Dimmable No, For Enclosed Fixtures No, Three-Way No, Light Color White, Indoor/Outdoor Usage Indoor Only, Overall Length 1 1/16 in These G-shaped miniature light bulbs have a miniature screw base, also known as an E10 base. The base has a 10mm diameter and screws into a compatible socket. G-shaped miniature light bulbs with a miniature screw base are used in flashlights, radios, toys, and other consumable products.G-shaped miniature light bulbs.