Seiko Prospex Alpinist SPB507 (New version)

Description
From the Alpinist collection, first launched in 1959, these watches were designed for Japanese ‘Yama-otoko’ mountain men, to be reliable in treacherous terrain.

Under the sapphire crystal glass, the archive-inspired classic pine green is complemented by ‘cathedral style’ hour and minute hands, accompanied by classic Arabic numerals and wedge-shaped indices. It features the traditional Alpinist logo under the Seiko logo, which featured on the very first 1950s Laurel Alpinist. The ‘Mountain Device’ logo features on the caseback of these watches, an aspect of the vintage original indicating the field nature of the watch. The case has an applied super-hard coating for increased scratch resistance and shine.

Through the exhibition case back, the in-house automatic 6R55 calibre can be viewed, accurate to -15/+25 seconds per day, with a power reserve of 72 hours.

Prospex is a combination of the words ‘Professional’ and ‘Specifications.’ Seiko Prospex timepieces are designed to be practical, reliable and durable; to meet the high standards required in extreme environments for sports lovers and adventure seekers alike.

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
Stop second hand function

Case/Band:
Case Material: Stainless steel (super hard coating)
Crystal: Sapphire crystal with magnifier
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: 20mm
Case Size:
Thickness:12.7mm
Diameter:39.5mm
Lug-to-lug:46.4mm
Other Details:
Water Resistance: 20 bar
Magnetic Resistance: 4,800 A/m
Weight: 88.0
Features: 
Rotating compass bezel
Screw-down crown
See-through & Screw case back