Seiko Cal. 7181 - 303

Seiko 7181-303

The 7181-303 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7181 caliber with 24j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-69acc82bd49b]

Also known as: Tuna

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
37mm
Case Thickness
8.3mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
170m
Dial Color
Silver
Jewels
24j
Frequency
36,000 bph
Power Reserve
65 hours
Year
1976

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seikata-wm-69acc82bd49b