COUNTRYMAN S9 UV ULTRAVIOLET 365NM 18650 LED FLASHLIGHT

It is advertised as a 5 watt, 365nm flashlight. I don’t think it is, but measured it is about 20% higher wattage (radiant UVA) than the Convoy. Construction is very similar except they glue the star MCPCB to the heat sink. They also include a fluorescent green “O” ring in the head - probably thought it was cute, it’s not. I threw it away. (although nice indicator that the light was one).

They say they use a CUN66A1B chip from Seoul Viosys - not. The LED they are using is a flat top, the 66A1B chip has a dome. Also, it is not a 5W device. I think they are using a CUN6AF1B part or the CUN6GF1A part and overdriving them hard. I don’t think the little Convoy package can handle the heat a 5w LED would generate.

Side by side with the Convoy it is obviously brighter. But bothers me that the chip is not what they say it is…