Seiko Cal. 3872 - 840

Seiko 3872-840

The 3872-840 is a sought-after Quartz piece from Seiko's golden era. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-977944eb054e]

Also known as: Crown, Baby Tuna

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
42mm
Case Thickness
15.2mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
70m
Dial Color
Black
Jewels
35j
Frequency
28,800 bph
Power Reserve
54 hours
Year
1970

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