Seiko Cal. 6131 - 934

The 6131-934 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6131 caliber with 36j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-1bee213e6aa8]

Also known as: Tuna, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

36j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1967

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