SEIKO PROSPEX
SEIKO WATCH AUTOMATIC 'ALPINIST' PROSPEX 39.5MM SPB503J1
The Seiko Prospex SPB503J1 Alpinist Automatic Men Watch continues the legacy of the original 1959 Alpinist, designed for Japan’s “Yama-otoko” mountain adventurers. Its teal blue dial features cathedral-style hands, Arabic numerals, and the vintage Alpinist logo, all protected by sapphire crystal. Crafted with a super-hard coated stainless steel case and an engraved “Mountain Device” logo on the back, this watch embodies rugged elegance. Powered by Seiko’s in-house 6R55 automatic calibre with a 72-hour power reserve, visible through the exhibition case back, it combines classic mountaineering heritage with modern precision and durability.
Calibre: Automatic - Powered By The Movement Of The Wearer
Function: Analogue - 3 Hands
Accuracy: +25 -15 seconds a day at normal temperature range (5°C and 35°C)
Power Reserve/Battery Life: Approx. 72 Hours Power Reserve
Calibre Number: 6R55
Case
Case Material: Stainless Steel
Case Size (Thickness): 12.7mm
Case Size (Diameter): 39.5mm
Case Color: Silver
Band/Bracelet: Bracelet - Stainless Steel
Band Color: Silver
Glass Material: Sapphire crystal with magnifier
Crown: Screw Down
Rotating Bezel: Inner ring
Dial Color: Aqua
Hand Indicators: Hour, Minute, Seconds
Calendar Indicators: Date
Lumibrite: Hands & Hour Markers
Dial Markers: Baton & Arabic Numerals
Water Resistance: 20 BAR
Frequently asked questions
Is this watch authentic and authorized?
Yes. Vincent Watch is an authorized Seiko retailer in Singapore, and this watch is sourced directly from Seiko.
What's included in the box?
Seiko's standard packaging, including box, papers, and manufacturer warranty card.
What's the warranty?
Covered under Seiko's 3-year international manufacturer warranty.
Vincent Watch — your most trusted watch authorised dealer in Singapore.