The original Marinemaster 300 (model SBDX001) was released in 2000 and ran all the way to 2015 before being succeeded as a the next logical step in the chain of Seiko pro divers. This Japan-only release is held in high esteem in the watch community as a perfect blend of high-end finishing with no compromise on function. Key features were a monobloc (one piece construction) stainless case, exceptional lume, hardlex mineral crystal and an 8L35 hi-beat movement. It also features 4 lines of text, as opposed to the later models that have removed the Marinemaster text.
I sought to create an homage to this great watch, including some upgraded components. Firstly, I have located a supply of high quality aftermarket monobloc cases to build a homage to the great Marinemaster. The movement will be a Seiko NH35; whilst this is a lower-end offering compared to the original 8L35, it presents a reliable, affordable, proven and serviceable movement. Whilst I have used the MM300 as inspiration, I have included a few personal touches as upgrades from the original. These include: - Sapphire double domed crystal with blue AR - Super-rare meteorite MM300 dial - Seiko NH35 automatic movement - Ceramic bezel insert - Super thick Angus Jubilee bracelet - the weight of this item should balance the large watch head on-wrist
I will also be adding a ceramic coating, as the original Seiko Diashield was not offered on this early model.
As monobloc watch cases are formed from a single piece of metal, there is no opening on the back like a traditional timepiece. The theory is that less openings means less chance of water ingress; in turn leading to a more effective diving watch.
Parts: - MM300 monobloc bare case, including domed sapphire crystal with AR - Ceramic bezel insert (Sub style) - Black and white chapter ring - Marinemaster dial and handset - NH35 movement - Strapcode Angus J-Louis bracelet