Seiko Cal. 7153 - 739

The 7153-739 is a sought-after Quartz piece from Seiko's golden era. Powered by the 7153 caliber with 21j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-6e5705519097]

Also known as: Monster, Helmet

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

37mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1977

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