Seiko Cal. 6657 - 323

The Seiko 6657-323 represents an important milestone in Seiko's 1980 lineup. It features a Silver dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-c61e54fef147]

Also known as: Pogue, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

8.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1980

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