Seiko Prospex Marine Green GMT SPB381J1. This modern re-interpretation of the 1968 Diver’s watch is inspired by Japan’s first hi-beat one-piece Diver’s watch created by Seiko.The success of the 1968 model laid the foundation for Seiko Diver’s watch development which for sixty years has innovated in wearable, precise watches for professional and recreational divers.This modern watch is powered by the new in-house Calibre 6R54 and is the first of Seiko’s diving watches with mechanical GMT functionality. Built for wearability: the bracelet fits comfortably due to its low centre of gravity and short-pitch – and durability: with a three-day power reserve and high-quality scratch resistant Japanese ceramic Diving scale, its water resistance is up to 200m.Prospex is a combination of the words ‘Professional’ and ‘Specifications.’ Seiko Prospex timepieces are designed to be practical, reliable and durable; to meet the high standards required in extreme environments for sports lovers and adventure seekers alike.*This watch has been nominated for the 2023 GPHG Awards in the Challenge category.GPHG, also known as the Grand Prix d’Horlogerie de Genève, recognises worldwide excellence in watchmaking and is essentially the watch world equivalent of the Oscars.
Toulson Jones Jewellers are official Seiko stockists.
Seiko Prospex Marine Green GMT SPB381J1.
Movement
Caliber Number
6R54
Movement Type
Automatic with manual winding
Precision
+25 to -15 seconds per day
Power reserve
Approx. 72 hours(3 days)
Jewels
24
Functions
- 24-hour hand (dual time display function)
- Stop seconds hand function
Case/Band
Case Material
Stainless steel (Bezel: Stainless steel with ceramic display)
Case Size
Thickness:12.9mm
Diameter:42.0mm
Lug-to-lug:48.6mmCrystal
Sapphire crystal
Crystal Coating
Anti-reflective coating on inner surface
LumiBrite
LumiBrite on hands, index(es) and bezel
Clasp
Three-fold clasp with secure lock , push button release with extender
Distance between lugs
20
Other Details
Water Resistance
200m / 660ft diver's
Magnetic Resistance
4,800 A/m
Weight
176.0g
Features
- Unidirectional rotating bezel
- Screw-down crown
- Three-fold clasp with secure lock
- Screw case back