Seiko Cal. 6131 - 173

The 6131-173 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6131 caliber with 36j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-5cbc3290c218]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

11.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1979

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