Seiko Cal. 5688 - 812

The 5688-812 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5688 caliber with 29j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-c5d1ea629d87]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

8.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

White

Jewels

29j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1990

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