Seiko Cal. 5240 - 188

Released in 1974, the Cal. 5240 with design code 188 was part of Seiko's domestic market collection. With its 22mm lug width and 8.3mm profile, it sits comfortably on most wrists. [seikata-wm-47631df2fe54]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Silver

Jewels

20j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1974

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