When it is referred to lighting bulb, there are large bulb and miniature bulb. Different from large bulb, miniature bulb is generally in small size by definition, which is identified by a number between one and four digits. Some of them may too small to print letters on them. However, there are hundreds of miniature bulbs for almost any kind of application. While we cannot catalog every application for these miniature bulbs, they are mainly used for task, indicator lighting, flash light, emergency lighting, toys, bicycle lighting and hand lantern. Compared with traditional large bulb, the feature of this product is summarized as follow: (1) compatible to all kind of quality torch; (2) comprehensive electrical rating; (3) high intensity light beam projected with parabolic reflector; (4) low light reduction; (5) compact size; (6) low replacement cost.