Seiko Cal. 6687 - 252

The Seiko 6687-252 represents an important milestone in Seiko's 1978 lineup. It features a Black dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-dd66588b5fbc]

Also known as: Bellmatic, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1978

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