describe Energy saving: the 10W r7s 78mm led bulb compatibles the r7s j118 100W halogen lamp and saves more than 90%. Low maintenance cost reduces the hassle of frequent bulb compatiblement. 10W r7s LED: warm white 10W R7 - S LED 78mm, double ended COB LED 1000lm, warm white 3000k, light output can compatible 80W halogen bulb perfectly. Wide application: r7s led lights are widely used inside and outside the room, work and security lights, workshop lights, garage lights, shop lights, stage lights and studio, metallic halogen lamps, street lamps, special lamps, general lighting. Easy to install: (16x18mm)/(0.63inx4.6in), easy to install, lifespan 20,000 hours. The standard r7s socket is suitable compatible most LED lamps and is equipped with a standard r7s socket without cables or complex installation procedures. Environmental protection: high-brightness, low-power consumption LED lighting. No lead or mercury, no ultraviolet or infrared radiation. Reduce visual fatigue and protect the eyes.