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>ST1644 automatic (self-winding) movement (has second hack function)
-Dial : black,blue,ice blue,red dial
-Case diameter : 36mm without crown
-Case thickness : 13mm
-Case Material : solid 316L stainless steel case
-100m water resistance
-Strap : 22mm width president band
-Glass : flat sapphire glass
-Luminous marks and hands
-Dial size:28.6mm
-Customize logo(dial,crown,caseback,strap)--extra fee
-exchange hand,dial