Online store: AliExpress
Светодиодная матрица для проекторов, высокомощная, 110/220 В, 20/30/50 Вт
1.27 RUB
Very nice COB LED. The expected Wattage was exceeded from expected 50Watts, showing 51.5Watts on Wattmeter. It is only a pity that these devices does not last longer (maximum average of 6 months with low use, and it is not a matter of power dissipation, because I use an extremely large heatsink. In all the case, the light emitted is very fair.