Seiko Cal. 3855 - 431

The 3855-431 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3855 caliber with 31j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-c3d98452b104]

Also known as: Sumo, Panda

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1997

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