1. performance R7S halogen bulbs: 100 W, 1000 lumens. Voltage: 230V. Length: 3.07 inches (78 mm). Average lifespan of 2500 hours, reducing the frequency of replacing R7S halogen bulbs. (Please measure your lamp base before ; compatible only with 78 mm bases, not 118 mm). 2. performance: ecohalogen. Wide 360° beam angle. Jtype 78 mm doubleended halogen bulb, 100 watt, suitable for R7s base. Clear glass design delivers warm white (yellow) 2700K illumination with a CRI of 99, showcasing vibrant colors. May become hot due to halogen bulb properties. 3. Eyeprotecting dimmable R7S haloline bulbs: R7S 78 mm dimmable halogen rod, adjustable brightness via dimmer. Flicker, safeguarding your eyes and family. No hazardous emissions, UV, or IR radiation—an ecofriendly light source. 4. Versatile R7S halogen rods: R7S 78 mm halogen lamps ideal for home, , and office floodlights, construction spotlights, work/safety lighting, exhibition rooms, stage/studio lighting, floor lamps, landscape lighting, and more.