Seiko Cal. 4552 - 538

The 4552-538 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4552 caliber with 18j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-91e34da0e9e5]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Silver

Jewels

18j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1965

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