SLS series Compact fluorescent lamps fit most luminaries, such as restaurants, hotels, foyers, corridors, surgeries and offices. Suitable for all rooms, especially where continuous economical lighting is needed. Old version of this series is an older design with a longer length. The new version SLSN is designed in more compact size. Technical Features Assembled by SMT manufacturing process with chip type electronic components. Rated voltage: 220-240V/50Hz or 110-130V/60Hz Rated wattage: 15W / 20W / 25W (+5%/-10%) Power Factor: around 0.6 Lamp Base: B22d/E26/E27 Average life span: 8,000hrs Color Rendering Index (Ra): >80 Color Temperature: 2700K/4200K/6200K Not dimmable visit www dot cn-sourcelink dot com to view more details and photoes