Seiko Cal. 5251 - 591

The 5251-591 is a sought-after Solar piece from Seiko's golden era. Powered by the 5251 caliber with 31j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-f166aaa7e927]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Cream

Jewels

31j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1978

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