Seiko Cal. 3815 - 320

The 3815-320 is a sought-after Kinetic piece from Seiko's golden era. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-7014cdcc5bd0]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1992

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