Seiko Cal. 6641 - 918

Seiko 6641-918

This Hand-Winding model from 1971 features a 46mm Two-Tone case. Powered by the 6641 caliber with 30j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-a38d906bcfda]

Also known as: Turtle, Tuna

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
46mm
Case Thickness
11.3mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
120m
Dial Color
Navy
Jewels
30j
Frequency
28,800 bph
Power Reserve
44 hours
Year
1971

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