Seiko Cal. 6156 - 990

The 6156-990 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6156 caliber with 25j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-4f02b34f6f6b]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Green

Jewels

25j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1994

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