Seiko Cal. 3856 - 121

The Seiko 3856-121 represents an important milestone in Seiko's 1998 lineup. Powered by the 3856 caliber with 35j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-5d2eac4a8130]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1998

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