Seiko Cal. 6331 - 107

Seiko 6331-107

The 6331-107 is a sought-after Solar piece from Seiko's golden era. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-b5677696f3ba]

Also known as: Helmet, Bellmatic

Specifications

Movement
Solar
Case Material
Titanium
Case Width
36mm
Case Thickness
11.1mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Cream
Jewels
19j
Frequency
36,000 bph
Power Reserve
62 hours
Year
1965

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