Seiko Cal. 6690 - 837

Seiko 6690-837

This Quartz model from 1990 features a 35mm Stainless Steel case. Powered by the 6690 caliber with 36j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-d789b00d45d8]

Also known as: Sportsmatic

Specifications

Movement
Quartz
Case Material
Stainless Steel
Case Width
35mm
Case Thickness
11.9mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
40m
Dial Color
Green
Jewels
36j
Frequency
28,800 bph
Power Reserve
43 hours
Year
1990

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