Seiko Cal. 5646 - 371

Seiko 5646-371

This Automatic model from 1984 features a 40mm PVD Black case. Powered by the 5646 caliber with 28j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-05484adb372c]

Also known as: Sumo, Bullhead

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
40mm
Case Thickness
15.7mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
200m
Dial Color
Navy
Jewels
28j
Frequency
28,800 bph
Power Reserve
55 hours
Year
1984

Related Models

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