Seiko Cal. 7145 - 731

Seiko 7145-731

The 7145-731 is a sought-after Spring Drive piece from Seiko's golden era. It features a White dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-bfa8c09590ec]

Also known as: Bellmatic

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
38mm
Case Thickness
8.7mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
40m
Dial Color
White
Jewels
17j
Frequency
36,000 bph
Power Reserve
51 hours
Year
1966

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