Seiko Cal. 5242 - 657

Released in 1972, the Cal. 5242 with design code 657 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-bf00fe616dd3]

Also known as: Sumo, Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1972

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