Hi Crawdaddy,
Yes,each COB chip is drawing about 48W,the 4 piece would be a 200W light.4' X 4' coverage area's are for flowers,that's true!below are the advantages of our COB grow light.
1.30pcs chips on each COB board,light intensity is sufficient for flowering and growth
2.Multiaspect concave-convex reflector design,Reflective effect is pretty good.
3.90 degree beam angle available which has a perfect balance between coverage and light intensity
4.Light mixture is well-distributed, it's more Conducive to plant growth and flowering than single LED grow light.
5.It can be closer to plants,Not easy to burn the leaves
6.Finely designed spectrum optimal for plant flowering and fruiting.Based on scientific research and growers tests. proven to work perfect.