Seiko Cal. 3857 - 400

Seiko 3857-400

This Hand-Winding model from 1988 features a 38mm Titanium case. Powered by the 3857 caliber with 30j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-e2ffdd76a205]

Also known as: Bellmatic

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
38mm
Case Thickness
9.0mm
Lug Width
20mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
200m
Dial Color
Black
Jewels
30j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1988

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