Seiko Cal. 0731 - 931

Seiko 0731-931

The 0731-931 is a sought-after Automatic piece from Seiko's golden era. It features a Green dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-334f5c360d2b]

Also known as: Bellmatic, Golden Tuna

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
15.2mm
Lug Width
21mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
70m
Dial Color
Green
Jewels
32j
Frequency
21,600 bph
Power Reserve
39 hours
Year
1966

Related Models

seikata-wm-334f5c360d2b