Seiko Cal. 5642 - 681

Seiko 5642-681

This Automatic model from 1978 features a 44mm Hardlex-Coated Steel case. Powered by the 5642 caliber with 24j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-139d12288a03]

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
15.3mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
60m
Dial Color
Black
Jewels
24j
Frequency
21,600 bph
Power Reserve
64 hours
Year
1978

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seikata-wm-139d12288a03