1. performance R7S halogen bulbs: 300W, 3000 lumens. Voltage: 230V. Length: 4.65 inches (118mm). Direct replacement for all T3 118mm R7S doubleend sockets. Average lifespan of 2500 hours, reducing the frequency of bulb replacements. (Please measure your lamp base before ; compatible only with 118mm bases, not 78mm.)2. performance: ecohalogen technology. Wide 360 beam angle. Jtype 118mm doubleended halogen bulb, 300W, 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 J118 dimmable halogen tube (118mm), adjustable brightness via dimmer. Flicker operation safeguards your eyes and family. No harmful emissions, UV, or IR radiationan ecofriendly light source.4. Versatile R7S halogen rods: R7S 118mm T3 halogen lamps for floodlights in homes, shops, offices, construction spotlights, work/safety lighting, exhibition halls, stage/studio lighting, floor lamps, landscape lighting, and more.