Seiko Cal. 5657 - 951

The Seiko 5657-951 represents an important milestone in Seiko's 1966 lineup. It features a Navy dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-6739c505a47e]

Also known as: Monster, Golden Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1966

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