Seiko Cal. 5285 - 242

The 5285-242 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5285 caliber with 26j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-904b0d0d3e28]

Also known as: Monster, Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

35mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Silver

Jewels

26j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1966

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