Prospex Heritage Turtle 1968 Re-Interpretation SPB315J1

This watch shape is nicknamed by Seiko fans as a ‘turtle’ – its silhouette, side view and watch case back resemble a turtle with its curved comfortable shell. To divers, sea turtles are symbols of good fortune. This design is a modern interpretation of the original 1968 Turtle, featuring an elegant but sporty 5-row bracelet with newly developed compact clasps to match the slim case, while the date window is positioned for legibility, without interference with the indices. 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. Since launching Japan’s first diver’s watch in 1965, Seiko’s innovative watchmaking has changed global dive watch standards.

Movement
Caliber Number - 6R35
Movement Type - Automatic with manual winding
Accuracy +25 to -15 seconds per day
Duration - Approx. 70 hours
Jewels - 24

Functions
Stop seconds hand function
Date display

Case/Band
Case Material - Stainless steel (super hard coating)

Case Size
Thickness: 12.3mm
Diameter: 41.0mm
Lug-to-lug: 46.9mm
Crystal - Curved sapphire crystal
Crystal Coating - Anti-reflective coating on inner surface
LumiBrite - LumiBrite on hands, index(es) and bezel
Clasp - Three-fold clasp with secure lock , push button release with extender
Lug width - 20mm

Other Details
Magnetic Reluctance - 4,800 A/m
Weight - 156.0g

Features
Screw case back
Unidirectional rotating bezel
Screw-down crown
Three-fold clasp with secure lock
Screw case back