Seiko Prospex Heritage Turtle 41 MM 1968 Silicone Band Automatic Watch SPB317J1

Caliber Number: 6R35

Movement Type: Automatic with manual winding

Precision: +25 to -15 seconds per day

Power reserve: Approx. 70 hours

Jewels: 24

Hacking seconds hand function

Date display

Case Material: Stainless steel

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

Band Material: Silicone

Distance between lugs: 20

Water Resistance: 200m / 660ft diver's

Magnetic Resistance: 4,800 A/m

Weight: 100.0g

Unidirectional rotating bezel

Screw-down crown

Screw case back