Seiko Cal. 3857 - 306

This Spring Drive model from 1999 features a 40mm Hardlex-Coated Steel case. It features a Silver dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-70b339aea260]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Silver

Jewels

24j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1999

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