Seiko Cal. 5642 - 231

Released in 1980, the Cal. 5642 with design code 231 was part of Seiko's domestic market collection. Powered by the 5642 caliber with 34j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-586892eafa8d]

Also known as: Panda, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

10.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Navy

Jewels

34j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1980

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