Seiko Cal. 4418 - 820

Released in 1975, the Cal. 4418 with design code 820 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-f916fc290cd3]

Also known as: Tuna, Golden Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1975

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