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Prospex for Seiko basically means "Professional Specification" that their timepieces in this category are built with very high standards to be used by professionals. Seiko introduced the Prospex 200M Automatic Baby Tuna under the Prospex collection means it fulfills the "Seiko Professional Specifications". With much request since we introduced Seiko JDMs, we decided to bring in the MADE IN JAPAN Baby Tunas, denoted by the "J" in the reference number and the "MADE IN JAPAN" at 6 on the dial.
|Seiko Prospex 200M Automatic Baby Tuna Deep Blue Ref. SBDY055
Today, let’s take a look at the latest one to join the collection Prospex 200M Automatic Baby Tuna Deep Blue Ref. SBDY055. The Baby Tuna got its nickname from its resemblance to the Marine Master Tuna. Powered by Seiko's automatic caliber, 4R36, operating at 21,600 BPH (3 Hertzs) with hacking and hand winding capabilities. It has 24 jewels with a power reserve of 40 hours.
The 200m water resistant stainless steel case measure 51.7mm case without the crown, but has a lug to lug length of only 48mm, and a height of about 13mm, with a lug width of 22mm. The short lugs to lugs length means this watch wraps around the wrist on all(small or big) wrist sizes like a glove making it extremely comfortable. The 51.7mm case is constructed out of 2 layers, inner and outer case. The inner and outer case is made from stainless steel. This added protective shroud that gets a full satin-brushed finish for a much tool-watch look.
|MADE IN JAPAN with 4R36 automatic movement|
|Applied index on dial for added dimensions|
All in all, for more than a decade, the Baby Tuna is still one of the best bangs for buck Seiko dive watch. Some might complain about the price increase from its predecessor, but we beg to differ — the Seiko Prospex 200M Automatic Baby Tuna Deep Blue Ref. SBDY055 is one hell of a watch that has been the first in its class to have a brand new dial variant. While it stays true to its formidable durability and legibility, with a proven design that started its cult following, featuring excellent casework, and a unique fume blue dial. Certainly a model that will find its way into many diver watch lover's collections.