Recently, we have received some complains saying that they have received 5000K LH351D LED instead of 5700K version, at first, I thought “ok, maybe it’s my mistake”. But when I tried to look more into it, I think we have not made any mistake, but because those two LEDs are too close, and the customers just “think” they have received “5000K” instead of 5700K.
1. As you probably know, our flashlights are made to the orders, and since we provide dozens of different LED options, each MCPCB is actually marked with the order number including the LED color temperature at the back, I’m not saying that I don’t make any mistake, but it’s almost impossible for us to use wrong LED for multiple lights. If the label on the flashlight box is marked as “5700K”, I have my reason to believe that it’s indeed 5700K, not the others.
2. I have compared the LH351D 5000K and 5700K, they are SO CLOSE, you can hardly to tell the difference unless to compare them side by side, the difference is just minimum, please refer to the photos, the real life difference is even much less noticeable than in the photos. I have to look real carefully to tell which one is which.
3. So, if you believe you have received 5000K instead of 5700K, we have nothing to prove it unless you have exact the same lights with both 5000K, and 5700K to shine at the wall like in the image, which I think no customers have exact the same lights with both of these two LEDs.
4. And since many customers like to choose the W1/W2 6000K with LH351D 5700K LED combination, since they think the 300K difference is small, but when they see the real product, they will find the W1/W2 6000K is cooler as they expect, and the 5700K LED looks too neutral, and thought that they have received 5000K version instead of 5700K, but that is just the nature of these two LEDs.
. Group buy?! 
