Seiko Cal. 6318 - 557

The Seiko 6318-557 represents an important milestone in Seiko's 1974 lineup. With its 22mm lug width and 10.8mm profile, it sits comfortably on most wrists. [seikata-wm-c540e571d53b]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Burgundy

Jewels

19j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1974

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