The adjustable white 12mm resin strap is suitable for wrist circumference of 7.5 inches (about 19.0cm). 100-hour chronograph, 10 cycles of memory; 24 hour countdown timer. Can customize the alarm clock; 24-hour military time mode; 2 time zones; Day, date and calendar White and chrome-plated 33mm resin case; Acrylic lens; Gray digital display; Indiglo luminous dial Waterproof to 100 meters (330 feet): Generally speaking, it is suitable for snorkeling and swimming, but not for diving.