XML-U2-1C 320LM 7000K LED White Light Emitter with 16mm Base(3.7V)

Pros: First the Light output of 320LM is measured at 700mAmp`s. You can drive it much higher 3Amp`s or more to get more Lumens I used this LED many times in my Projects and have no doubt to drive it unil 4.5 A The color is cool blue but yuo get a few "extra lumens" Good built quality well centered and welded on it`s place

Cons: none

Other: Nice LED, a bit cool but far away from blue. If you plan to drive the LED with more than 4 Amp`s make sure to heatsink as best as you can!!! Best result`s with Driver SKU: 127684 and a Trustfire "Flamed" 18650 Battery

Pros: It is very bright. It is important not just for amount of light, but also for cooling as it dissipates less heat with same light output. It is best LED available with high power. I am using it for BMW angel eyes. I've replaced original LED with this one with good results.

Cons: A bit bluish color. This is expected for this lumen per watt. Screw holes are close to solder contacts. You have to use small screws to avoid short circuit.

Other: Very good product.