Important Facts on Shopping for LED Light Bulbs: When shopping for light bulbs, please DO NOT go by the listing photos, as the photos cannot give you an accurate match. Instead, please verify the light bulb dimensions, shape code, base, voltage, and wattage all match the type you are replacing. Please also DO NOT go by the applications listed in the listing. There are many variations of light bulbs used for the same application. So, please make sure to make the right match prior to order. If the light flickers, that is a sign of LED incompatibility. To resolve this, try to use 1-2 incandescent light bulbs in the same fixture to help stabilize the circuit, as the LEDs consume too little wattage for the system to work properly. Please be advised in general LED light bulbs are not designed to be left on all night long every day. Extended hours of use every day will dramatically shorten the lifespan of most LED light bulbs due to overheating the LED chips. Guide on Buying the Correct LED Light Bulbs: Base, Shape and Dimensions Base: E26, known as the standard medium screw base, with 26mm diameter Shape: Globe G25 or G80 (Europe) Diameter: 3.15 inches Length: 4.53 inches Please make sure the light bulb base matches what your light fixture has. Some light fixtures may not work with LED light bulbs. Examples of incompatibility include a motion sensing switch or specialized fixture not designed for LED, or higher power line voltage variation, as LED light bulbs are more sensitive to voltage variations than traditional light bulbs. Light Temperature These LED light bulbs output 2700K light temperature, which is considered warm white or soft white. The glow is yellowish, providing a warm and cozy ambience. However, it is NOT ultra warm around 2200K, which is closer to amber color instead. Please look carefully at the output light color prior to purchase. Working with LED Dimmers These LED light bulbs are only dimmable using dimmers designed for LED light bulbs. Dimming using non-LED dimmers will result in incompatibility, as LED dimmers work very differently from traditional dimmers. Common issues include not dimming, flickering, not able to turn off the light. Please check the compatibility of your dimmer switch or light fixture prior to purchase. If unsure, then most likely dimming will not work and we advise you to purchase non-LED light bulbs. Read more Simba Lighting LED G25 Edison 4W 2700K Simba Lighting LED G25 9W Frosted 2700K Simba Lighting LED G25 9W Frosted 5000K Simba Lighting LED ST21 Edison 4W 2700K Simba Lighting LED ST21 Edison 6W 2700K Shape G25 G25 G25 ST21 ST21 Wattage 4W 9W 9W 4W 6W Equivalent Incandescent Wattage 40W 60W 60W 40W 60W Luminous Flux 400 lumens 800 lumens 800 lumens 400 lumens 600 lumens Dimmable ✓ ✓ ✓ Cover Material Glass (Clear) Plastic (Frosted) Plastic (Frosted) Glass (Clear) Glass (Clear) Base Type Standard E26 Medium Standard E26 Medium Standard E26 Medium Standard E26 Medium Standard E26 Medium Light Temperature 2700K Warm White/Soft White 2700K Warm White/Soft White 5000K Daylight/Cool White 2700K Warm White/Soft White 2700K Warm White/Soft White Bulbs Included 6 Bulbs 3 Bulbs 3 Bulbs 6 Bulbs 6 Bulbs Lifetime 25,000 hours 30,000 hours 30,000 hours 25,000 hours 25,000 hours