Seiko Cal. 4525 - 187

The 4525-187 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4525 caliber with 29j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-90fb2816a3bc]

Also known as: Helmet, Bellmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Silver

Jewels

29j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1965

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