Seiko Cal. 4486 - 857

The Seiko 4486-857 represents an important milestone in Seiko's 1981 lineup. Powered by the 4486 caliber with 17j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-4b6d3ff6dfe6]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Navy

Jewels

17j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1981

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