Seiko Cal. 5628 - 231

Released in 1975, the Cal. 5628 with design code 231 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-fc74a0207b15]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

45mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1975

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