The Seiko Prospex MM200, affectionately dubbed the "Baby Marine Master," is a standout in Seiko’s Prospex lineup, a collection renowned for its rugged, adventure-ready timepieces. Introduced at the Baselworld 2018, the MM200 (officially known as the Seiko Prospex SRP777 or similar references) has captured the hearts of watch enthusiasts for its blend of professional dive watch functionality, aesthetic appeal, and accessible pricing. This article explores the MM200’s history, design, technical specifications, and its place in the world of horology.