Battery performance and capacity may vary based on use, lithium batteries are a serviceable part which will require replacement with or without use. We do not warrant or recommend water immersion since this may void warranty due to corrosion. This is device may be an international version but compatible for worldwide use, some international versions have an audible shutter sound.
This device although IP rated can be damaged or destroyed by liquid ingress, particularly salt and chlorinated water which corrodes the seals. Liquid damage is not covered under warranty by the seller