Seiko Cal. 6691 - 398

Seiko 6691-398

The 6691-398 is a sought-after Solar piece from Seiko's golden era. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-72ea75c7566c]

Also known as: Sumo

Specifications

Movement
Solar
Case Material
Gold-Plated
Case Width
37mm
Case Thickness
8.8mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
150m
Dial Color
Burgundy
Jewels
21j
Frequency
28,800 bph
Power Reserve
53 hours
Year
1986

Related Models

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