Seiko Cal. 3817 - 555

The 3817-555 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3817 caliber with 29j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-a631890b96b6]

Also known as: Tuna, Sea Horse

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

14.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

29j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1990

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