Seiko Cal. 6691 - 350

Seiko 6691-350

The 6691-350 is a sought-after Solar piece from Seiko's golden era. Powered by the 6691 caliber with 25j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-4c25df39514c]

Also known as: Sumo, Bullhead

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
35mm
Case Thickness
15.9mm
Lug Width
22mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
70m
Dial Color
Blue Sunburst
Jewels
25j
Frequency
36,000 bph
Power Reserve
58 hours
Year
1967

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