Seiko Cal. 6687 - 198

Seiko 6687-198

This Hand-Winding model from 1968 features a 36mm Stainless Steel case. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-1c96e489d21c]

Also known as: Tuna, Bullhead

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
36mm
Case Thickness
11.3mm
Lug Width
20mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
150m
Dial Color
Green
Jewels
27j
Frequency
21,600 bph
Power Reserve
50 hours
Year
1968

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