Involvement:Expert (understands the inner workings) - Ownership:1 week to 1 month
-Cheap like everything on DX.
-The total power of the LEDs in the lamp is actually 5 W. Surprisingly the item description is correct from this aspect.
-Mechanical parts have less than poor quality.
-After receiving the lamp, disassemble it and apply enough heat transfer gel between the heat sink-reflector and the reflector-PCB surfaces!
There are 10 pcs of 0.5 W SMD LED in the lamp soldered onto an Al core PCB. Check my pics. The PCB board of the LEDs warms up to 57 C° after 1 hour of operation.
Made of aluminum. Warms up to 44 C° after 1 hour of operation on free air with 24 C° environmental temperature.
The high-frequency transformer is the hottest point, it heats up to 52C° after 1 hour of operation. The size and the design of the PCB seems to be appropriate to drive a 5 W LED. Check my pics.
LED power is as advertised. Light amount is definitely less than 450 lm. Color temperature is around 3500 K as advertised.
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