Seiko Cal. 6318 - 630

Released in 1976, the Cal. 6318 with design code 630 was part of Seiko's domestic market collection. It features a Cream dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-d5766130fec8]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

21j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1976

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