Seiko Cal. 6131 - 673

The 6131-673 is a sought-after Solar piece from Seiko's golden era. Powered by the 6131 caliber with 26j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-f48d157554b8]

Also known as: Tuna, Helmet

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

35mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Navy

Jewels

26j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1990

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