Seiko Cal. 3813 - 870

This Quartz model from 1971 features a 39mm Titanium case. Powered by the 3813 caliber with 36j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-d860808491e4]

Also known as: Crown

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

39mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1971

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