Seiko Cal. 5660 - 231

The Seiko 5660-231 represents an important milestone in Seiko's 1970 lineup. Powered by the 5660 caliber with 25j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-0cf6ed5d08d0]

Also known as: Pogue, Panda

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

10.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

25j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1970

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