Seiko Cal. 3881 - 133

Seiko 3881-133

This Automatic model from 1965 features a 35mm Two-Tone case. Powered by the 3881 caliber with 28j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-a7c0f21d923f]

Also known as: Bellmatic, Navigator

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
35mm
Case Thickness
14.1mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
180m
Dial Color
Green
Jewels
28j
Frequency
28,800 bph
Power Reserve
66 hours
Year
1965

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