I use these as night lights, but they can be used for a variety of purposes. They have a magnetic backing and can be attached to any metal object or the metal discs with adhesive backing that are provided with them.
The night light setting will only activate the lights at night when you walk by them. Convenient for me when I wake up to get a drink of water as they are set along my path and light up as I walk by and there is one in the kitchen that will light when I walk in.
There is also a setting for daylight, which works the same as the night version, but will light up during the day. I do not use this much.
The remote has a variety of options, such as turning the light on until you press off, adjusting the amount of light and also 5 time settings to have the light go auto off after the expired time (from 15 minutes until 2 hours).
I bought two sets and the remotes will work with either set. I use these as my lights in my living room to avoid glare on my TV.
They include charging cables and you can use the same plug in adapters as used for a phone. They also include small metal circles with adhesive that can be attached anywhere and the magnetic backing of the lights will adhere.
I definitely recommend these at the very reasonable price they are offered.