Seiko Cal. 5221 - 304

Released in 1974, the Cal. 5221 with design code 304 was part of Seiko's domestic market collection. It features a Navy dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-244a7af4d941]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1974

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