Seiko Cal. 3873 - 639

Seiko 3873-639

The 3873-639 is a sought-after Kinetic piece from Seiko's golden era. It features a Silver dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-5b63a886a3a5]

Also known as: Tuna, Sportsmatic

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
43mm
Case Thickness
12.6mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
90m
Dial Color
Silver
Jewels
31j
Frequency
36,000 bph
Power Reserve
47 hours
Year
1982

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