SK402
Grow Lights460W
The SK402 is a 460 Watt full-spectrum fixture from Spectrum King, running a spectrum they hold a patent on — No. 10238043 — and made in the USA.
The all-white reflective housing is a deliberate choice rather than styling: Spectrum King use it to push intensity out to the edge of the canopy, which is where most fixtures fall off. Coverage is 16 Sq ft in flower, a 4×4 ft square, opening to 36 Sq ft in veg. It is IP65 rated with a water resistant housing and safety certified, so a humid room is not a problem.
The warranty is split in a way worth reading: 90% or better light output guaranteed for 3 years, plus 5 years mechanical on parts and labour. Output warranties are rarer than mechanical ones and harder to write.