●Function : week,month,date,24 hours
when you push the button at 2 o'clock,you can adjust the month
when you push the button at 4 o'clock,you can adjust the date
when you push the button at 8 o'clock,you can adjust the week
when you push the button at 10 o'clock,you can adjust the year
please note,dont adjust the small dial when the time from 10 o'clock to 3 o'clock,or it can demage the movement
●Wide of Strap : 21mm coffee leather strap
●Glass : special scratch proof mineral glass