He'd already got one. ' S. E. Harper, 3rd engineer on watch down below at the time of the sinking.
Mother-of-Pearl Iridescent, milky interior shell of the fresh water mollusk that is sliced thin and used on watch dials.
Arabic Numerals: The familiar style of numerals (1, 2, 3, 4, etc.) used on watch faces.
For additional information on watch band sizes, check out the sizing guide at Old School Leather Company.
Casio provides detailed instructions on watch maintenance and care.