High efficiency R7S halogen bulbs, 100W, 800 lumens. Voltage: 230V. Length: 3.07 inches (78mm). Direct replacement for all T3 78mm R7S double-ended sockets. Average lifespan of 2500 hours, reducing the frequency of bulb replacements. (Please measure your lamp base before purchasing. Compatible only with 78mm base, not 118mm.) Excellent performance with high-quality eco-halogen technology. 360-degree wide beam angle. 78mm, 100-watt J-type double-ended halogen bulb designed for R7S base. Clear glass construction delivers 2700K warm white (amber) light and a CRI of 99, enhancing color vibrancy of objects. May become hot during operation due to halogen bulb characteristics. Dimmable R7S halogen bulbs offer adjustable brightness via a dimmer switch. Flicker-free operation for comfortable lighting. No hazardous emissions, UV, or IR radiation. (Note: The 80W R7S floodlight bulb may appear less bright at long distances compared to other types of floodlights with the same power.) Wide application: Suitable for home, shop, and office spotlights, task lighting, security lighting, showrooms, stage and studio lighting, floor lamps, and landscape lighting. Designed for reliable performance. One-year warranty included. 90-day hassle-free return or exchange policy. For product support, please reach out through available channels.