Seiko Cal. 4542 - 241

The 4542-241 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4542 caliber with 24j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-b9c6bceda287]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1975

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