Seiko Cal. 5688 - 236

The Seiko 5688-236 represents an important milestone in Seiko's 1989 lineup. The Coin-Edge bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-a0960f8311cc]

Also known as: Tuna, Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1989

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