Nice lights however there seems to be a design flaw
921346
Nice lights however there seems to be a design flaw. They drain the battery even when turned off and therefore the dead batteries leak inside the light!
882005
These are good looking lights. They're bright and responsive. They worked well with my Arduino and we're pretty straight forward to set up. Unfortunately the adhesive wasn't very good. I'm glad that I was using them on a temporary project because they have all fallen off within about 2 weeks. These were adhered to a clean smooth metal surface indoors at room temp. This could have been my own fault, perhaps I could have used an alcohol pad to clean the surface, but other than that I feel like they were ideal conditions. Also, if you are planning to cut and solder the light strip be very careful not to overheat the strip. The solder pads are very delicate and a lot of them pulled off the strip rendering that individual light unusable. Other than these negatives, the price was decent and the lights look good,
1828378
Lights work and the installation is great. Only issue I had is that one of the lights does not sit snug. Why one side would be a perfect fit and the other moved around is beyond me. Only 2 stars due to the fit.
2971484
They are extremely bright and make it easy to see behind while in reverse. There is a design flaw with these bulb though that cause them to flicker when the low voltage "filament" has power applied to it. I contacted support and they told me it is an issue and will refund my money so I can buy one of their other bulbs that are for sell.

The build quality seems to be there, they just need to redesign the circuit for more reliable lighting.
1467572
The lights look great. However, I have been receiving intermittent error lights since installation.
2819807
these are good lights but do not replace the round version on the boat railing location I was trying to fix, to long to mount
2842773
The lights look great but to turn them off you unscrew them slightly, and it's a small range to turn them off without them coming apart.  Overall I'm happy with the purchase.
1674092
The light bulbs are great but you have to add a little extra  solder  to the slots where are the bulbs plug in to the fixture just not enough  solder  to make a good connection
688674
LED lights are very good the bad is that the integrated circuit in the electric cables is not working as it should, I had to suppress that built and put direct white lights work well and I lost the yellow lights. In conclusion good very good finish but a faulty lights integrated circuit damages a good product.
3473072
I have no complaints with the LEDs or the light output.  These are bright and light up the canopy of a 40ft tree nicely.  I've only had them up for 2 days so not sure of longevity. The housing feels sturdy as does the spike. The only complaint is the part that connects the spike to the light. It is a flimsy peace of junk. I bent the heck out of it trying to adjust the light even after loosening the screws.  My dog barely grazed it and it bent and needed adjusting so the light was where it's supposed to shine. I'll probably make that part myself out of sturdier metal. For the price a good buy even considering that problem, hope they last
3979218
The only improvement that I would make on these lights would be the connection to the taillight itself. When the lights are mounted on the left and right side with the red light to the rear, the wires come out of the outside of the lights and meet in the center. It would have made more sense to put the connection on the inside so the wires didn't cross the light. Otherwise they seem to be a very nice set and will do the job perfectly.
3017264
The light looks good, but the finials do not go tightly onto the mounting screws.  There's a 1/4" gap of exposed screw between the end of the finials and the base.  A little too wobbly so I think I'll try to find washers that fill the gap.
4154206
The units appear to be well made.  They are not 2x4, however.  They are a bit short of the 4' length.  The instructions are lacking as well.  A cover must be removed before wiring can be completed and the cover can then be replaced.  The instructions do not indicate this and it is not obvious. Also, I tried to utilize a dimmer switch that I purchased as appropriate for led's.  It didn't work.  However, the lights work great with just an on/off switch.
1914071
Good lights but inconsistent light at different speeds.
3469817
Ok the reason I'm giving this light 4 stars out of 5 because the first light they sent was defective had to return it but Amazon did overnight me a new one that one work fine. Light works great nice and bright but the light is in a fixed position you can only move it up or down not left to right. So I had to drill holes on the side of the bracelet to mount it the way I needed it to work. They need to improve the design so you can adjust it left to right. Other then that light works fine.
3941938
Make your connections, then solder them or the lights will malfunction.
Make sure you crimp them tight to lock the clip.
I used the angled piece and soldered it rather than using the connectors, it's a bit more work but worth it.
Also it is wise to  cover the soldered areas with hot glue.
3611076
Every thing is OK but led lights are not designed to be fixed OK.  You will need to fix them after it go out of its place.