The new Caliber 6R54, which has a power reserve of three full days, powers the new Seiko Prospex Alpinist Mechanical GMT.

High legibility

The 24-hour display on the bezel and the 24-hour hand with red tip guarantee the legibility of the GMT function.

Specifications

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 second hand function

Case/Band

• Case Material: Stainless steel (super hard coating)
• Case Size: Thickness:13.6mm, Diameter:39.5mm, Lug-to-lug:46.4mm
• Crystal: Curved sapphire crystal
• Crystal Coating: Anti-reflective coating on inner surface
• LumiBrite: LumiBrite on hands and index(es)
• Band Material: Cow leather
• Clasp: Three-fold clasp with push button release
• Distance between lugs: 20

Other Details

• Water Resistance: 20 bar
• Magnetic Resistance: 4,800 A/m
• Features:
  • Rotating compass inner ring
  • Screw-down crown
  • See-through & Screw case back