Seiko Cal. 5688 - 827

The 5688-827 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-fab137299ca6]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Black

Jewels

22j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1978

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