Seiko Cal. 3831 - 550

Seiko 3831-550

This Automatic model from 1993 features a 38mm Titanium case. Powered by the 3831 caliber with 17j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-2ab60272347a]

Also known as: Helmet, Sportsmatic

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
38mm
Case Thickness
11.5mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
170m
Dial Color
White
Jewels
17j
Frequency
36,000 bph
Power Reserve
49 hours
Year
1993

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seikata-wm-2ab60272347a