Get Cineo Matchbox LED at B&H Photo.
I just started using this diminutive LED light (on loan from B&H Photo), which puts out a good amount of highly color accurate lighting using remote phosphor technology. The unit includes 3200K and 5600K inserts which can be swapped in seconds, with 4300K an option (and probably my preferred choice, but the kit did not include it).
Design is outstanding, very solidly made and it dims smoothly from very low to full power. I let it run for hours on full power and it gets moderately warm on the back cooling fins, drawing ~13 watts. So far, I have not evaluated color rendition, but it looks great to the eye.
At about $462 it’s not a casual purchase, but it’s definitely professional grade gear and there are a variety of accessories, including barn doors, softbox, battery support, etc. It weighs 425g (without the power adapter) and is highly portable. Cineo also has some much higher output full-size units (up to 500 watts, which must be incredibly bright!).
For users in need of a versatile, compact light, the Basic Matchbox LED Light Kit from Cineo features Remote Phosphor Technology for changing color temperature by simply swapping out panels for higher output and greater color accuracy. It has high CRI ratings of 98 at 3200K and 94 at 5600K as well as TLCI ratings of 99 at 3200K and 97 at 5600K. Also, output at 3' is rated at 315 lux / 30.5 fc at 3200K and 362 lux / 37.5 fc at 5600K. Additionally, it has a wide beam angle of 160° along with both local and DMX dimming options from 0-100%.
The panel is durable with a weather-resistant construction and the units are made in the USA. The 3.25 x 5.25 x 1.5" panel also emits zero UV light and has a 1/4"-20 thread on the base for mounting in a variety of situations. An AC adapter is included, along with a 6' extension cable and both 3200K and 5600K phosphor panels while optional battery kits can convert it for ultra-portable operation.