Seiko Cal. 5657 - 323

The 5657-323 is a sought-after Solar piece from Seiko's golden era. Powered by the 5657 caliber with 29j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-1871c72a959c]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

44mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Navy

Jewels

29j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1989

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