Seiko Cal. 3847 - 821

The 3847-821 is a sought-after Quartz piece from Seiko's golden era. Powered by the 3847 caliber with 27j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-5e6745c06d94]

Also known as: Helmet, Emperor

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

43mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1973

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