You are looking at a SEIKO Sub mod.

- Blue SEIKO dial

- Blue 24-hour dual time zone bezel insert

- Silver hands

- SEIKO NH38 movement

- Silver 40mm stainless steel case

- Sapphire crystal

- Silver 20mm stainless steel bracelet

- Blue 20mm Marine Nationale strap

- Blue 20mm ZULU strap

- Blue 20mm NATO strap

Also, please see my other auctions for more unique items.