ToogooLaser Finger Beams - 48 ct. box Bright LED finger lights

Are they in packages of 4 lights each?

I ordered 48 and only 15 work. How can we resolve this issue

How do you change the batteries without breaking them?

What are the dimensions of this item (1 of the hands with 4 lights)? I'm trying to buy goodie bags for a birthday party and need them to fit.