I tryed with a screwdriver, a coin, to rotate the thing wheres the battery, nothing work and since I trow away the manual I have no idea how to do it and I dont want to damage it.

Thanks.


Answer:
To change the battery all you need is a nickel and the right battery. This website told me http://trixareforkids.wordpress.com/2008…

The paragraph that says it is 2 down from under the underline words WORKOUT FUNCTIONS


Answer:
its pressed on, you will need a really fine flat blade screwdriver and try to pry it open at the sides.