Seiko Cal. 6331 - 551

Seiko 6331-551

This Automatic model from 1974 features a 39mm Stainless Steel case. Powered by the 6331 caliber with 27j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-d45b6203d9cc]

Also known as: Bellmatic, Golden Tuna

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
39mm
Case Thickness
11.3mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
30m
Dial Color
Green
Jewels
27j
Frequency
28,800 bph
Power Reserve
58 hours
Year
1974

Related Models

seikata-wm-d45b6203d9cc