Seiko Cal. 5231 - 729

Seiko 5231-729

The 5231-729 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Cream dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-744bc0c7efca]

Also known as: Tuna, Bullhead

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
40mm
Case Thickness
10.0mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
150m
Dial Color
Cream
Jewels
36j
Frequency
21,600 bph
Power Reserve
65 hours
Year
1973

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