Very easy to install and connect. Did have a slight issue with the power supply after about a week. I contacted customer service and spoke with a gentleman named Mark. He took care of my issue with no hesitation on his part and followed up with me on my satisfaction. I listed a 4-star rating only because I wish the wiring harness for each light was longer in length.

Easy to install and it lights up our outdoor steps that was in a dark area behind the house.

Great product. Easy to install, you just need to have the right screw head to drill its hole. We had a snow storm and a heavy rain after installing it. It was not affected at all. In case the wire is not long enough, you can buy an extension.

I purchased these LED deck lights to install in a short outdoor retaining wall that surrounds a fountain. The lights are as bright as I expected (i.e. the luminosity is just as advertised) and the color temperature is a cool white. It was straightforward to use a Forstner wood boring bit to create the 42mm wells that the lights are designed to press into, using a smaller bit to go through the bottom of the well through the board in order to pass through the electrical leads. In my case I also purchased an LED dimmer system with an RC remote. Placing the dimmer unit in-line between the light set transformer and the first light worked out great; but does require cutting the line to expose the inner red and black wires. I don't suggest doing this unless you have at least a hobbyist's skills with low voltage electrical wiring. The system is designed so that the connectors can only go together maintaining the plus (red) and minus (black) wiring throughout. If you cut the lines, you have to be sure to maintain the proper polarity.

The lights themselves are reasonably well made and are potted to be waterproof. I have no reason to believe they will not provide year's of service, as long as the metal outer shell is stainless steel as stated by the manufacturer.

You only get about 5-6 feet of wire between the lights, so I bought 18 gauge lamp cord from my local hardware store and then bought some marine solder butt connectors to extend them, these one's here: (https://www.amazon.com/gp/product/B073RMRCC3/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1)
I went ahead and put some heat shrink tubing over the connections as well for a little added protection since I was pulling the wires above my vinyl soffit. I had about 1" between my vinyl and original soffit, so it made a perfect chase to run my wires through and the puck lights are shallow enough they fit right in.

I needed 12 feet between my lights, so I just added about 10' of wire between each light to have extra in case I ever needed to pull some wire back to swap a light out. I am not sure how far you could extend these, but I added about 40 extra feet of lamp cord in total to the circuit and so far they have ran 2 nights all night long. The power supply does get a little warm, but I have never had a 12v transformer not feel warm when plugged into 110v. The "naturally white" color looks nice as well, it's not "warm white", and it's not "daylight", it falls right in the middle. My photo at night also looks way brighter than they actually are, they put of a good amount of light, but it's more subtle than my iPhone camera leads on lol.