Seiko Cal. 3818 - 173

Released in 1968, the Cal. 3818 with design code 173 was part of Seiko's domestic market collection. Powered by the 3818 caliber with 31j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-20eb4fcd82a4]

Also known as: Sumo, Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Cream

Jewels

31j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1968

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