Product Description: KINDLY NOTE: THE DEFECTIVE BALLAST IN FIXTURE WILL CAUSE THE BULB FAILED TO WORK. When the lamp is not powered on, the mercury inside the tube is in liquid form and will produce a collision sound when shaken. Features: Wattage: 15W; Length: 18 inch/1.5 Feet; Base: Medium Bi-Pin G13; Color temperature: 6500K; CRI: 80+ Long-Lasting and Reliable: This 15W Fluorescent lamp has a lifespan of more than 12000 hours, more than seven times longer than an average incandescent bulb! Excellent Performance: The Product comes with a Color Rendering Index(CRI) of 80+ which is crisp and comfortable for the eyes, illuminates your space with crisp and comfortable day light. Easy to Install: Designed as a universal replacement fluorescent bulb, this T8 tube comes with a G13 base which is a very common base. Enjoy the hassle-free installation. After-Sales Service: We provide a 180-Day warranty for the bulb. If there is any problem during the warranty period, please feel free to contact us. Thank you for your interest and support. We strive to provide practical and reliable products for your daily needs. Please note that due to lighting conditions, photography, and differences between display devices, the product color shown in the images may vary slightly from the actual item. The actual product shall prevail. We appreciate your understanding and wish you a pleasant shopping experience.