Seiko Cal. 5661 - 813

Seiko 5661-813

The Seiko 5661-813 represents an important milestone in Seiko's 1988 lineup. Powered by the 5661 caliber with 31j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-b8ed7a9afd23]

Also known as: Golden Tuna

Specifications

Movement
Solar
Case Material
Gold-Plated
Case Width
39mm
Case Thickness
8.2mm
Lug Width
19mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
190m
Dial Color
Black
Jewels
31j
Frequency
36,000 bph
Power Reserve
36 hours
Year
1988

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