Seiko Cal. 4561 - 616

The Seiko 4561-616 represents an important milestone in Seiko's 1975 lineup. It features a Green dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-984964057c6c]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1975

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