Easy Installation Used standard E27 base, can be easily fitted to E27 Edison screw lamp holder, to replace old light bulbs.It’s NOT Dimmable, Please DO NOT use it with dimmer switch. Perfect Lighting Flicker-free and Instant on. Frosted lamp shades will give more comfortable light and protect your eyes. High colour rendering (CRI > 82) provides vivid and natural colour. Reliable Quality UKCA and CE certification. Long lifespan of 25,000 hours, no need to change bulbs for years. 220-degree beam angle to provide wider light coverage indoors. Wide Application 3000k warm white looks similar to traditional incandescent light. Ideal for living room, kitchen, bedroom, restaurant, ceiling light, pendant fixture, chandelier, desk lamp, floor lamp,etc..2-YEAR CE and RoHS Certification, 2 years , offering 100% replacement or refund service for any quality problems. Reliable quality: UKCA and CE certification. Long lifespan of 25,000 hours, no need to change bulbs for years. Special Features: Light up immediately and achieve full brightness without preheating after turning on the light. No flicker, can prevent eye strain, create a relaxed and happy atmosphere. Ideal for replacing old incandescent and halogen lamps in your home. Pls read the products specifications before buying, to make sure it is the right product you want. 2. Pls make sure the power is off during installation, to avoid the risk of electric shock. 3. It is a non-dimmable, so pls DO NOT use it with any dimmer switch.