Seiko Cal. 6644 - 983

Seiko 6644-983

The Seiko 6644-983 represents an important milestone in Seiko's 1986 lineup. Powered by the 6644 caliber with 29j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-60c2af9fd0e6]

Also known as: Bullhead, Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
41mm
Case Thickness
11.8mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
Cream
Jewels
29j
Frequency
28,800 bph
Power Reserve
37 hours
Year
1986

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