Seiko Cal. 5633 - 761

Seiko 5633-761

The 5633-761 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5633 caliber with 21j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-3e30f0df5e01]

Also known as: UFO

Specifications

Movement
Quartz
Case Material
Gold-Plated
Case Width
37mm
Case Thickness
9.3mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
80m
Dial Color
Silver
Jewels
21j
Frequency
36,000 bph
Power Reserve
60 hours
Year
1981

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