Seiko Cal. 7170 - 903

The 7170-903 is a sought-after Solar piece from Seiko's golden era. Powered by the 7170 caliber with 27j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-eb34bd6c3d46]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1979

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