Seiko Cal. 3877 - 397

Seiko 3877-397

The 3877-397 is a sought-after Spring Drive piece from Seiko's golden era. It features a Burgundy dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-e4a4b70e3aa7]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
41mm
Case Thickness
8.3mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
130m
Dial Color
Burgundy
Jewels
24j
Frequency
36,000 bph
Power Reserve
55 hours
Year
1990

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