Seiko Cal. 6644 - 988

The 6644-988 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6644 caliber with 36j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-9cf8b9d45c94]

Also known as: UFO, World Timer

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

42mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1985

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