Review on CHANZON 10 Pcs High Power Led Chip 4W RGBW 8 Pins (300MA - 350MA For Each Color 4 Watt) Multicolor Super Bright Intensity SMD COB Light Emitter Components Diode 4 W Bulb Lamp Beads DIY Lighting by Percy Haulin

Tested with UPRTek CV600. Tested multiple of each kind.Natural White 4000-4500k - Horrible CRI at about 63, but it was at color temp stated. Definitely wouldn't want to use this for anything unless you need yellow and green with a spike in blue.Blue 460-470nm - Peak at 458nm. Not in range.Royal Blue 440-450nm - Peak at 451nm. Package states 440nm. Not in range.Deep Red 650-660nm - Peak at 660. Package states 660nm.Full Spectrum 380-840nm - Peaks at 444nm blue. Not really anything at 453 or 465 which plants prefer. Red humps at about 640nm but not much at 660-665.