Seiko Cal. 5651 - 637

Seiko 5651-637

This Quartz model from 1981 features a 42mm PVD Black case. Powered by the 5651 caliber with 33j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-e38ab9a1194a]

Also known as: Baby Tuna

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
42mm
Case Thickness
9.4mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
130m
Dial Color
Black
Jewels
33j
Frequency
36,000 bph
Power Reserve
69 hours
Year
1981

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seikata-wm-e38ab9a1194a