Seiko Cal. 5646 - 451

Seiko 5646-451

This Automatic model from 1969 features a 45mm Two-Tone case. Powered by the 5646 caliber with 21j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-4102c2e57ce6]

Also known as: Monster

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
45mm
Case Thickness
15.0mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
Champagne
Jewels
21j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1969

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