Hi, I am a complete newbie, and I am going to replace the battery on my watch myself. Before I do so, are there anything that i need to pay attention to? Is it hard to replace a battery? I've never done it before, and never even opened the back of the watch to look inside. I had this watch for about 10 years now, and it ran well for 9 and half yr until the battery went dead about a month or so ago.
(I'm referring to the casio transformer g-shock)