CasioWomens Quartz Watch, Analog Display and Stainless Steel Strap LTP-1237D-7ADF

What are the precise measurements, in inches, of the watch case...not the strap, but the watch casing itself? thanks! ♐

do the costumers need to install the battery by ourselves?

How long should the battery last?

Need to replace battery. What battery does it take? I can only find sstting instructions.