Seiko Cal. 6631 - 188

Seiko 6631-188

The 6631-188 is a sought-after Solar piece from Seiko's golden era. It features a Burgundy dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-781f36084a10]

Also known as: Golden Tuna

Specifications

Movement
Solar
Case Material
Stainless Steel
Case Width
34mm
Case Thickness
8.5mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
90m
Dial Color
Burgundy
Jewels
33j
Frequency
21,600 bph
Power Reserve
38 hours
Year
1977

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seikata-wm-781f36084a10