STEELDIVE steel diving watch $ 129.08 Movement type: automatic mechanical movement Case material: 316L stainless steel Case process: sand pulling Bottom cover material: 316L stainless steel Case diameter: 43.8mm (excluding the head) Case length: 46.8mm (total length from top to bottom) Case thickness: 12mm (including table mirror and bottom cover) Case ear position: 20mm (where the case and the strap are connected) Watch length: 260mm (the total length of the watch/circumference) Strap material: silicone/rubber/steel Table mirror material: synthetic sapphire Table mirror type: flat sapphire Table mirror coating: anti-glare blue coating Table mirror size: 32*2.7mm (diameter * thickness)