Seiko Cal. 6140 - 520

The 6140-520 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6140 caliber with 18j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-3c1becbe1281]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

9.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1967

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