The Prospex Monster is a popular and distinctive line of dive watches produced by Seiko.
The watch gained its nickname "Monster" due to its rugged and bold design, as well as its robust build that was intended for underwater exploration and adventure. Seiko Monster is known for its unconventional and eye-catching design. It has a unique case shape with angular, bold lines, and a prominent bezel. The watch's bold and oversized hour markers, along with its large, luminous hands, enhance its visibility and readability. This Prospex is designed as a dedicated diver's watch. It typically offers a high level of water resistance, a screw-down crown, a unidirectional rotating bezel for tracking dive times, and luminescent markers for easy reading in low-light conditions. Over the years, Seiko has released multiple generations of the Monster, with updates to the design and technology, further enhancing its appeal to both new and longtime fans.