Seiko Cal. 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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