Seiko 5 GMT - SSK003

Story

Seiko’s premier SKX sports watch featuring GMT function

After conquering deep sea exploration in the ‘60s, pioneering space timekeeping in the ‘70s, and reshaping the digital domain in the ‘80s, Seiko set its sights on taking the world of sports by storm. As the first sports watch to feature a GMT or “zero hour” function, the Seiko 5 GMT met the dynamic needs of athletes crossing time zones—ensuring that no matter where they were, they were always synced with the heartbeat of the competition. Paired with Seiko’s in-house automatic caliber 4R36 movement, LumiBrite hands for low-light visibility, and a unique transparent case back, this stellar piece marks Seiko’s next stride into melding innovation with functionality, ready to grace the wrists of champions and travelers around the world.

Features

• The first sports watch to feature a GMT or “zero hour” function that allows wearers to know the local time anywhere in the world
• Manual and automatic winding capabilities
• Equipped with Seiko’s in-house-made automatic caliber 4R36 movement with 24 jewels and 21,600 vibrations per hour
• Power reserve lasts approximately 41 hours
• Framed by a metalized, bi-color GMT bezel
• LumiBrite hands and indexes for low-light visibility
• Navy dial features a magnified date calendar and large GMT hand for instant visibility
• Stainless steel case includes a screw-down transparent case back for a view of the timekeeping in action
• Two-push button safety clasp is adjustable by five positions for a secure wear and easy on and off
• Water resistant to 100 meters (330 ft)

Materials

• Case: Stainless steel
• Bracelet: Stainless steel
• Crystal: Hardlex

Specs

Movement	Seiko 4R36
Movement Type	Automatic with manual winding capacity
Duration	Approx. 41 hours
Case Material	Stainless steel
Crystal	Hardlex
Lume	LumiBrite on hands and indexes
Water Resistance	100 m / 330 ft
Case Thickness	13.6 mm
Case Diameter	42.5 mm
Case Back	Screw
Crown	Screw-down
Bezel	Unidirectional rotating bezel
Jewels	24
Display	GMT
Clasp	Three-fold with secure lock, push button release with extender
Distance Between Lugs	46 mm