Seiko Cal. 3869 - 641

Seiko 3869-641

The 3869-641 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3869 caliber with 29j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-b65a294f6870]

Also known as: Helmet, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
45mm
Case Thickness
15.3mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
Black
Jewels
29j
Frequency
36,000 bph
Power Reserve
69 hours
Year
1990

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seikata-wm-b65a294f6870