INVICTA 9310 Men's Pro Diver Collection Swiss Quartz Movement Two-Tone Stainless Steel Watch. Two-tone-stainless-steel case; blue dial; date function. Water resistant to 660 feet (200 M): suitable for recreational scuba diving. Dial window material type: Mineral. Case material: Two-tone stainless steel. Band Material: Two-tone stainless steel. Bezel material: Two-tone stainless steel. Bezel function: Unidirectional A bezel that rotates one way. Most unidirectional bezels rotate counterclockwise. In many dive watches, it is used to measure elapsed time spent underwater. Calendar: ...