Seiko Cal. 6644 - 891

Seiko 6644-891

The 6644-891 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6644 caliber with 30j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-1b9a2f447b2b]

Also known as: Baby Tuna

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
44mm
Case Thickness
8.5mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
200m
Dial Color
Cream
Jewels
30j
Frequency
21,600 bph
Power Reserve
41 hours
Year
1983

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