100pcs 5mm RGB Tri-Color (Red Green Blue Multicolor) 4Pin LED Diodes Common Cathode Clear Round Lens 29mm Long Lead +300pcs Resistors (for DC 6-12V) Included,Light Emitting Diodes

These have all worked (so far) and are a good value for LED bulbs. Brightness depends on the power you put through them and, at higher voltages, you need resistors as with any LED. Running off a 1.5v button cell they are great for small lights in various crafts.

EXCELLENT ASSORTMENT, VERY BRIGHT, LOOKS LIKE GREAT QUALITY AND VALUE.

These LEDS are nice and bright for their size. The leads are nice and long which makes my projects easier. They are very well made. Water clear and every one is very consistent. They came with a pack of resistors also. Would definitely purchase again!

The media could not be loaded.  Very good led. The color is as expected and the flicker is noticeable and seems natural. Perfect for my dioramas.

I use them for developing photoresist for PCB making. They work quite well, I imagine they are good for developing other UV sensitive adhesives, making things glow etc.

The LEDs are perfectly fine so far although I have only been testing to see if they work.While the resistors are a nice bonus and not what I ordered this for, the tolerances are off. Going by the markings these are 1% tolerance (brown band), but the 430ohm resistors were reading closer to 400ohm. Looking closely at the tolerance marking shows a bit of silver paint on some of them leading me to believe these were manufactured as 10% tolerance (silver band) and repainted to appear as 1% tolerance. Not the end of the world if using for LEDs in low power applications, but if storing with other 1% tolerance resistors maybe keep these separate. The 470ohm reads closer to 440ohm for me so be sure to verify resistances and do calculations.Overall I am happy with the LEDs but a bit disappointed the resistors are misrepresented.

Green is very bright!

I got these hoping for some cool black light effects. They are fine LEDs, I just did not pay close attention when I got them. If you are looking for a more “ghostly white purple” these are for you. They do activate fluorescents, and glow in the dark pigments, but not as well as would be hoped. Because they are closer to invisible light (UV), they do not impress much when on, (at 2.85 volts). The reality is, they are working, but you can’t see them well. I have been driving some at 4volts DC, (without the resistor) and they are a bit more impressive. I may be overdriving them, and it may shorten their lifespan, but they seem to be doing okay, and I am really not happy I got these. The leds in the skull photo are on a DC power supply, metered at 2.85 volts. I hope that helps any fellow Halloweeners!

Todos funcionan

5mm UV LEDs with resistors bought for Halloween decorations.The original product I bought got lost in shipment. The seller responded quickly and got me a replacement set of LEDs. While the shipment missed Halloween for making glowey decorations, it rained this year anyways!I am pleased with how the seller dealt with the lost package and the LEDs are as described now that I have them.Thank you!

I have right this product twice now, great quality and fast shipping. I use them for a Halloween project, so I’ll be buying more

These are good. But be careful to do the math on the resistor values, so as not to burn them out. It is easy to happen with these devices: I lost a couple. Also, the colour is true only when viewed head-on, not from the side.

Size and random flicker pattern are great.