Seiko Cal. 3870 - 434

Seiko 3870-434

The 3870-434 is a sought-after Solar piece from Seiko's golden era. Powered by the 3870 caliber with 25j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-b39835ea0471]

Also known as: Turtle, Baby Tuna

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
38mm
Case Thickness
9.5mm
Lug Width
18mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
150m
Dial Color
Black
Jewels
25j
Frequency
21,600 bph
Power Reserve
69 hours
Year
1972

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