This FCOB LED strip light comes with 336, 480, or 528 high-density LED chips and is available in warm, nature, or cool white color temperatures. It has a long lifespan of 80,000 hours and is waterproof making it suitable for various occasions such as bedrooms, hotels, offices, and shopping malls. This linear, dimmable light is super flexible, does not have any dark areas, and is energy-saving. Please note that a DC12V or DC24V power supply must be used with this strip and that it can be cut to create custom lengths, but should not be bent sharply. The package includes only the LED lights, so a power supply and LED controller must be purchased separately. Please keep in mind that longer runs of this LED strip may require additional power to reduce voltage drop. It is recommended to choose a power supply based on the theoretical wattage of the strip. This product comes with a UL certificate of compliance.