Until recently COB video lights were too large and heavy for portable use. A few COB lights were introduced in 2023 that weigh less than 700g, and have an internal battery, including the light being reviewed here, the SmallRig RC-60B.
This light is bi-color 2700K to 6500K, and >97CRI. This review includes comparisons with a range of lights including some flashlights that are popular with photographers.