Seiko Cal. 7145 - 839

The 7145-839 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7145 caliber with 30j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-0aa1f4cd7eb9]

Also known as: Monster, Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

White

Jewels

30j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1997

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