Seiko Cal. 6645 - 428

Seiko 6645-428

This Quartz model from 1969 features a 40mm Hardlex-Coated Steel case. With its 18mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-14e5a21bdb3e]

Also known as: Monster

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
13.5mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
70m
Dial Color
White
Jewels
23j
Frequency
36,000 bph
Power Reserve
38 hours
Year
1969

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