【EXCELLENT PERFORMANCE】: High brightness 300 lumen, 2800K warm white light, CRI100. Our G4 bulb 12V provides warm lighting similar to natural sunlight. With a color rendering index up to 100, it accurately restores the true colors of objects, making illuminated areas appear vibrant and rich. 【HIGH QUALITY AND DURABLE】: CE and RoHS compliant. These halogen G4 12V 20W bulbs have a lifespan of over 3,000 hours and can be switched on and off up to 15,000 times. Each G4 light bulb meets strict testing standards for flicker, glare, and color reproduction, helping to protect your eyes. 【G4 DIMMABLE 100%-10%】: 20W G4 halogen bulb compatible with most dimmer switches. Adjust brightness from 10% to 100% to suit different settings and moods. Ideal for table lamps and indoor lighting, creating a comfortable and inviting atmosphere. 【EASY INSTALLATION】: Diameter: 0.31” (0.8cm), Length: 1.18” (3.0cm), Base: G4 bi-pin (4mm apart), 0.7mm pin diameter. Designed with a standard G4 base for easy installation—simply insert into the socket. Instant illumination with a 360° beam angle. Ensures good compatibility and hassle-free replacement. 【YOUR SATISFACTION IS OUR PRIORITY】: Backed by a 90-day seller warranty, CE and RoHS certified. If you experience any issues with the dimmable warm white G4 bulb, please . Our professional customer support team will assist you within 24 hours. Purchase this JC G4 12V 20W halogen bulb with confidence!