Seiko Cal. 3857 - 509

This Hand-Winding model from 1991 features a 43mm PVD Black case. It features a Navy dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-92462b743123]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

13.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1991

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