Seiko Cal. 6644 - 650

Seiko 6644-650

This Spring Drive model from 1994 features a 46mm PVD Black case. Powered by the 6644 caliber with 35j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-679a1c95100c]

Also known as: Baby Tuna, Arnie

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
46mm
Case Thickness
12.7mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
60m
Dial Color
Navy
Jewels
35j
Frequency
36,000 bph
Power Reserve
69 hours
Year
1994

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