Product Description
In 1968, Seiko launched a revolutionary new innovation with the world's first hi-beat Diver's watch. With a case design inspired by the original 1968 piece, carrying the name 'Marinemaster' from Seiko's heritage in diving watchmaking, this new re-interpretation has the same 300m water resistance.
Under dual-curved sapphire crystal glass is a black dial has a satin-finished professional grade texture, purpose-designed to reduce light reflection for high contrast under water, optimised for diving conditions. A streamlined case, with the crown in the comfy 4 o'clock position, strong Lumibrite for legibility at the darkest depths and a unidirectional rotating bezel meet ISO Diving standards. This Air Diver features a ceramic insert bezel and a super-hard coating for increased scratch resistance.
Especially crafted for diving watches, the 8L45 calibre is a highly accurate, reliable and robust movement. Crafted at the Shizukuishi Watch Studio in Japan's Iwate prefecture, this calibre is accurate to +10/-5 seconds per day with a 72-hour power reserve.
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.
Specifications
Movement
Accuracy: +10/-5
Calibre: 8L45
Movement Type: Automatic
Power Reserve: 72 Hours
Jewels: 35
Exterior
Dial Colour: Black
LumiBrite: Lumibrite on hands, indexes and bezel
Case Material: Stainless steel (Bezel: Stainless steel with ceramic display)
Strap/Bracelet: Stainless steel
Clasp: Three-fold clasp with secure lock & push button release, solid & slide adjuster
Case Diameter: 42.6mm
Case Thickness: 14.1mm
Case Length: 49.3mm
Lug Width: 20.0mm
Other Specifications
Water Resistance: 300m
Crystal Coating: Anti-reflective coating on inner surface
Crystal Type: Dual-curved sapphire crystal
Other Specifications: Screw case back, Screw-down crown, Stop seconds hand function, Unidirectional rotating bezel
Watch Function: 28,000 vibrations per hour (8 beats per second), Date display, Stop seconds hand function
Magnetic Resistance: 4,800 A/m
