These are great way to light up your deck, patio, or even just add a little decorations to your trees. The bulbs are tear drop shaped, they are clear glass and give off a yellow glow. They are solar powered, which is just wonderful! It takes a bit to get them charged up but once you do, they are simply beautiful!! You definitely want to make sure the solar panel box is kept in direct sunlight so that it will continue to charge your lights. The lights are pretty spaced out on the strand so it would be easy to put them up around the rail of your deck. These would also be ideal for party decorations! The instructions don't say anything about avoiding the rain or anything and so far mine has continued to work, even after a good rain shower. All in all, I think these are awesome!!