This pointer pen is super strong. It works great for presentations as its made for but is also a great thing to drive you cat crazy. I turned it on and my cat went crazy. The one we had before died and so she hasn't been able to chase the light that she is addicted to for at least a month. This is easy to press the button and hold it on without any pain in the hand. Its rechargable which makes it amazin to not have to hunt down batteries. I love this and she does too