Seiko Cal. 6381 - 518

The Seiko 6381-518 represents an important milestone in Seiko's 1980 lineup. It features a Green dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-3d1b04313430]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1980

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