Prospex ‘Navigator Timer’ Limited Edition Mechanical GMT


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This model is limited to 4,000 pieces worldwide and is a recreation of the Navigator Timer launched in Japan in 1968. The Navigator Timer was a pioneer in the realm of sports-type GMT models, being the first mechanical GMT watch with a rotating bezel.

This modern redux is powered by the new in-house 6R54 Calibre movement, the first mechanical GMT movement for Seiko Prospex with a three-day power reserve.

The case size and case back layout mimics the look of its original inspiration, whilst the super hard coating gives scratch resistance with a long-lasting shine. The GMT function with rotating bezel allows the wearer to conveniently track three different time zones at the same time.

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.

* In an actual watch, the case back direction might be different from the photograph.


Accuracy: -15/+25 seconds per day
Calibre: 6R54
Movement Type: Automatic with Manual Winding
Power Reserve: 72 Hours
Jewels: 24
Dial Colour: Grey
LumiBrite: Lumibrite on hands, indexes and bezel
Case Material: Stainless steel (Super Hard Coating)
Strap/Bracelet: Stainless Steel
Clasp: Three-fold clasp with push button release
Case Diameter: 38.5mm
Case Thickness: 12.6mm
Case Length: 45.2mm
Lug Width: 19.0mm
Other Specifications
Water Resistance: 10 bar
Weight: 131.0g
Crystal Coating: Anti-reflective coating on inner surface
Crystal Type: Box shaped sapphire crystal
Other Specifications: LIMITED EDITION on the case back, Screw case back, Rotating bezel
Watch Function: 24-hour hand, Stop seconds hand function
Magnetic Resistance: 4,800 A/m

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