I had the lights turned on (except for testing purposes yet), but they are a nice size and seem to be pretty bright. I have been looking for battery operated lights for my projects and these seem like they will work nicely as they are individual so you can use as few or as many as you want -

Awesome, as soon we received the product, we tested some of them !!.. really impressive.. the quality is really good..

I put these in my clients party balloons which were a big hit. Worked great for what I needed. I will definitely get these again for other events.