【EXCELLENT PERFORMANCE】: High brightness 300 lumen, 2800K bright warm white, CRI100. Our G4 bulb 12V provides warm lighting conditions similar to sunlight. A CRI up to 100 ensures accurate color rendering, making illuminated objects appear more vibrant and natural. 【HIGH QUALITY AND DURABLE】: CE and RoHS compliant. The lifespan of these G4 12V 20W halogen bulbs exceeds 3000 hours, with the ability to withstand up to 15000 on/off cycles. These bulbs meet 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 moods and settings. Ideal for creating a comfortable and inviting atmosphere in any space. 【EASY INSTALLATION】: Diameter: 0.31” (0.8cm), Length: 1.18” (3.0cm), Base: G4 bi-pin (4mm apart), 0.7mm pin diameter. Standard G4 base ensures easy installation—simply insert into the socket. Instant on with a 360° beam angle and wide compatibility. 【SATISFACTION GUARANTEED】: 90-day warranty provided by the seller. CE and RoHS compliant. If you experience any issues, please reach out for prompt support from our professional customer service team.