Seiko Cal. 3840 - 285

The 3840-285 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3840 caliber with 30j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-e5de3610aadf]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Champagne

Jewels

30j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1973

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