A must read before buying! ! ! Regarding the bulb flickering problem reported by recent buyers, we found that the problem is usually caused by the ballast (starter or rectifier) in the old lamp holder not matching the new R7S bulb. The solution is to remove the relevant accessories in the light holder, and the light bulb will return to normal.[High Quality, 3 pieces] - 10W J-type linear R7S bulb perfect replacement for 100W halogen bulb, (L78mm16mm, 3000K warm white light), high brightness, no buzzing[Latest upgrade] - The third generation sapphire crystal COB LED high-brightness large wick, this upgrade brings higher energy efficiency (saving 90%) and 50,000 hours of lamp life; double-headed high-quality ceramic and high-definition glass lamp tubes R7S bulbs have better heat dissipation capacity and light transmittance, and the quality is more stable, allowing you to worry more during use.[Eye protection and high color rendering value 85] - R7S J78 bulb. Protect your eyes, care for your family, no harmful gas emissions, no ultraviolet or infrared radiation, a perfect environmentally friendly light source; the color rendering index is as high as 85, allowing items to have better color performance under light[Wide Application] - R7S LED bulbs are used in floodlight replacement bulbs, work and safety lights, workshop lighting, stage and studio lights, LED metal halide lights, floor lamps, home lighting, night lighting, advertising lighting