These are lovely candles. They come in a set of three, all 3 are the same circumference, but the heights vary. They each take  3  AAA batteries—easy to install. There are 3 operating options: on, off, and ‘timer’. You can have the timer go on every evening, at the same time, and then you can choose how long you want your candles to be ‘on’—2, 4, 6, or 8 hrs—very convenient.  Though they are not specifically designed to be outdoor candles, I have placed 2 of the 3 outside, in a shady spot (too much sun could possibly melt the real wax outer coating), underneath a roof overhang—this will keep them dry as well. 
They are an ivory color, and the glow is bright—throws a golden yellow light.  I live in the Northeast, and I’ve put them outside in the summer. 
I’ll keep them outside all the time—in the winter too.
Batteries run out quickly. You need to replace batteries often.
Definitely recommend.