Prospex SPB505J1
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Description
The Seiko Prospex Alpinist SPB505J1 is a modern take on a classic adventure watch, designed for those who seek both durability and style.
Powered by the Caliber 6R55 automatic movement, it offers up to 72 hours of power reserve with reliable precision and a stop-seconds function. Its 39.5mm stainless steel case with super-hard coating is paired with a sapphire crystal and magnifier for clear readability, while LumiBrite accents ensure visibility in low light.
Practical features like a rotating compass bezel, screw-down crown, and 20 bar water resistance make it ready for the outdoors, while the see-through case back and stainless steel bracelet add a refined touch.
Movement
Caliber Number: 6r55
Movement Type: Automatic with manual winding
Precision: '+25 to -15 seconds per day
Power Reserve: Approx. 72 hours(3 days)
Jewels: 24
Functions:
- Stop second hand function
Case/Band
Case Material: Stainless steel (super hard coating)
Thickness: 12.7 mm
Diameter: 39.5 mm
Lug-To-Lug: 46.4 mm
Crystal: Sapphire crystal with magnifier
Crystal Coating: Anti-reflective coating on inner surface
Clasp: Three-fold clasp with push button release
Distance Between Lugs: 20
Other Details
Magnetic Resistance: 4,800 a/m
Weight: 147 g
Features:
- Lumibrite on hands and index(es) rotating compass bezel screw-down crown see-through & screw case back
Any purchase through our SEIKO Online Store has a 3-year guarantee.
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