Seiko Cal. 4550 - 242

The Seiko 4550-242 represents an important milestone in Seiko's 1979 lineup. It features a Black dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-3f0ff81ba17c]

Also known as: Tuna, Arnie

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Black

Jewels

23j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1979

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