1. [Color Rendering Index: The Color Rendering Index (CRI) is a scale from 0 to 100 percent indicating how accurate a "given" light source is at rendering color when compared to a "reference" light source. The higher the CRI, the better the color rendering ability.]
2. [Lumens: A unit of luminous flux in the International System of Units, that is equal to the amount of light given out through a solid angle by a source of one candela intensity radiating equally in all directions. In short...Lumens equals brightness!]
3. [Correlated Color Temperature: In order to differentiate the various hues of white, artificial light sources like LED light bulbs are labeled with a correlated color temperature, or CCT. CCT is measured in degrees Kelvin (K), and this temperature rating indicates what tone of white light will be emitted from the light fixture.]
4. [Ingress Protection: IP (or "Ingress Protection") ratings are defined in international standard EN 60529 (British BS EN 60529:1992, European IEC 60509:1989). They are used to define levels of sealing effectiveness of electrical enclosures against intrusion from foreign bodies (tools, dirt etc) and moisture. With an IP65 rating, the LEDs can be used in an outside setting and are water-resistant but they are not waterproof and are not suitable to be submerged.]