Seiko Cal. 5640 - 921

Released in 1969, the Cal. 5640 with design code 921 was part of Seiko's domestic market collection. Powered by the 5640 caliber with 32j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-14e065654f54]

Also known as: Panda

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Cream

Jewels

32j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1969

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