Magic Tricks

I have both twilights, one had the tilt switch , and it came on when you tilted the bulb, and it stayed on till it was layed down flat in your hand.
The last one I bought, has a on off switch built into the end of the bulb, which makes it better.
Now both Twilights used different sized watch batteries. I misplaced my batteries, and for some reason I can not get help from Penguin Magic as to what size batteries to buy.
The older one used 3 watch batteries, and the newest one only uses 2 watch batteries. I was hoping that one of you can tell me what size watch batteries I need for both. Thank You for any help