Dial Diameter: 41mm
Band Width: 20mm
Function: Auto date calendar window.
Movement: quartz movement (Japan Made)
Mirror Material: Hardlex
WATERPROOF ：HANDWASH, SWIMMING, NO PROBLEM! Perfect for all kinds of business, casual, indoor activities, or daily use. NOTE: Please DO NOT press any buttons in the water or wear this watch for longtime underwater activities – such as diving, etc.