Movement : Automatic movement Case diameter : 39mm Case Material : solid 316L stainless steel case. 30m water resistance. Dial : White dial ,luminous hands and marks . Strap:Stainless steel strap . Glass : Sapphire glass Function: the 3 o'clock dial is date indicator ,the 9 o'clock is week indicator the 6 o'clock dial is second dial when you push the button on 2 o'clcok,you can adjust the week when you push the button on 4 o'clcok,you can adjust the date