Seiko Cal. 5648 - 550

The 5648-550 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5648 caliber with 29j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-d994ec2eca9b]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

29j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1988

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