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        Calibre 6R54
                  The new Calibre 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
 - Accuracy
 - +25 to -15 seconds per day
 - Duration
 - 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
 - Lug width
 - 20
 
Other Details
- Water Resistance
 - 20 bar
 - Features
 - 
                                
- Screw-down crown
 - See-through & Screw case back
 
 

