Seiko Cal. 5688 - 366

The 5688-366 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5688 caliber with 23j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-3cba0ca45c36]

Also known as: Monster, Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1983

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