Seiko Cal. 0731 - 339

Seiko 0731-339

The 0731-339 is a sought-after Hand-Winding piece from Seiko's golden era. The Coin-Edge bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-8ca02d8de10d]

Also known as: Sportsmatic

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
12.7mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
150m
Dial Color
Cream
Jewels
24j
Frequency
36,000 bph
Power Reserve
49 hours
Year
1968

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