Seiko Cal. 3831 - 644

Seiko 3831-644

The 3831-644 is a sought-after Quartz piece from Seiko's golden era. With its 22mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-a5c49dacf65b]

Also known as: Bellmatic

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
40mm
Case Thickness
11.4mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
40m
Dial Color
Silver
Jewels
22j
Frequency
28,800 bph
Power Reserve
64 hours
Year
1999

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