【DIMMABLE】: Klarlight 400W 118mm halogen bulb is dimmable and can be used with traditional dimmer switches. You can choose the brightness that suits you. 【HIGH BRIGHTNESS】: R7s 118mm 400W halogen bulb offers a high brightness of 7500 lumens, equivalent to a 700W incandescent bulb, for a longer lifespan and savings of over 60% on your electricity bill. 【DURABLE QUALITY】: Using specially designed high-quality glass, it resists high temperatures, dissipates heat quickly, and has a long lifespan, saving energy and maintenance costs from frequent bulb replacements. No shadows, no flash, no flicker. 【ADVANTAGES】: R7s 118mm halogen bulb 400W is ideal for corridors, stages and studios, homes, workshops, landscapes, exhibition lighting, security lighting, or other lighting occasions: For safety, do not use it in an enclosed fixture, as this may damage and cause the bulb to explode.