Adjustable Brightness: G4 LED bulb emits 200lm, 6000K cool white light and 360° beam angle, dimmable. You can adjust the brightness you want to meet your needs, providing a comfortable and bright atmosphere to your space, no blue light, compatible with most dimmers, Ideal for LED dimmers, good quality dimmers will not make the bulb flicker. Excellent Performance: Built-in high-quality LED chip, no buzzing, no glare, no flicker, no need to warm up to reach maximum brightness, protect your eyes. Energy Efficient and Durable: LED G4 12V bulbs can replace traditional 20W halogen bulbs. It only consumes 10% energy to achieve the same or higher quality brightness, which gives you saves 90% on electricity bills. Its lifespan is up to 30,000 hours, saving you the trouble of changing bulbs frequently. Safety and Health: CE and RoHS certified, CRI 80, ensuring vivid visual enjoyment with original color. There is no radiation and no harmful substances such as mercury. No UV or IR. High quality