Seiko Cal. 7153 - 831

The 7153-831 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7153 caliber with 25j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-40afed2393a4]

Also known as: UFO, Sportsmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

41mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

White

Jewels

25j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1971

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