Seiko Cal. 5240 - 284

The 5240-284 is a sought-after Hand-Winding piece from Seiko's golden era. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-f7774688e0e4]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Champagne

Jewels

27j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1987

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