This multi-functional watch features a 40mm case size and is water resistant up to 50 meters, perfect for various daily activities and underwater adventures.

To use this watch, simply set the time and date according to the instructions on the manual. It's suitable for everyday wear and can handle light water exposure like washing hands. But don't wear it during deep - sea diving. For maintenance, clean the watch regularly with a soft, dry cloth. Avoid exposing it to extreme temperatures and chemicals. This will help keep your watch in good condition for a long time.