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It comes in 44-millimeter monobloc stainless steel housing. The single-shell construction does not require a helium valve for professional diving and offers a pressure resistance of 30 bar, which corresponds to the conditions in 300 meters of water.
The interior uses the automatic caliber 8L35 , which offers more than 50 hours of gear autonomy. It is being pulled up by the significant jack lift "Magic Lever" by Seiko.
For best readability and ease of use ensures the typical signature Seiko diver watches: distinctive index appliques, powerful hands and a minute-scale scaled, one-sided rotatable diving bezel. The Prospex Marinemaster Professional remains readable under all lighting conditions thanks to the Lumibrite phosphor coating.
Another advantage is the screw-down crown at four o'clock, which is protected by its position from shocks. The stainless steel band is equipped with a diving band extension and can thus easily be worn over a diving suit. Case and strap are covered with a special hard coating and protect the watch from scratches. The Prospex Marinemaster Professional will be delivered in a special box with a changing strap. MaRi
https://www.watchtime.net/uhren/seiko-p ... -sla021j1/
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