The Marine Master Professional Tuna SBBN031 is built as a serious dive watch for ultimate performance. It has great water resistance, is tough, and is built to handle virtually any harsh conditions in regards to water that you may subject it to.

The SEIKO MARINE PRO SBBN031 has a classic design that makes it instantly recognizable as a dive watch, but at the same time, it is built on the Seiko Tuna design which is unique from most other dive watches out there. The Tuna SBBN031 is the perfect watch for someone who appreciates quality and wants a well-built, well-finished timepiece with great performance that stands out from the ordinary and offers exceptional value for money.