LED (Light Emitting Diode), is the same as light emitting diodes. It is a semi-guided light-emitting device. It is the use of semiconductor chip as luminescent materials. When the two site together with a positive voltage, directly shine as red, yellow, green, blue, orange, purple, white light.

Life: LED light source without filament, operating voltage is low, service life up to 50000-100000 hours, which is 5 years to 10 years.

Environmental: harmful elements without in the production hazardous substances are not issued in the production , without radiation. High-tech : compared with traditional light sources, LED light source convergence of computing, networking, embedded and other high-tech, with online programming, unlimited upgrades,flexible features

LED used in watch come in last few years, led watch show on the Japanese market first. At the beganning, be used in the steel sheet or a full drill table above of the watch. Because the core is relatively expensive. Now we finally had spread to everyone's wrist.

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