Seiko Cal. 3813 - 864

This Automatic model from 1997 features a 45mm Two-Tone case. Powered by the 3813 caliber with 36j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-345d13662a28]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Silver

Jewels

36j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1997

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