Seiko Cal. 4436 - 931

Seiko 4436-931

This Hand-Winding model from 1987 features a 36mm Two-Tone case. Powered by the 4436 caliber with 25j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-c430d193fe87]

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
36mm
Case Thickness
13.3mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
180m
Dial Color
Cream
Jewels
25j
Frequency
21,600 bph
Power Reserve
51 hours
Year
1987

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seikata-wm-c430d193fe87