I was unable to use it at all, the lights went out in less then 1 hour & waste of money!
I don't know Why but batteries run out weary quickly, I both new one and it is the same. One more problem, metal that touches the battery and activates light becomes weak after few hours and the light gradually goes out. So I can't use any of 20 that I bought. And new battery doesn't help. The mechanism is very poorly made.