Seiko Cal. 4520 - 789

The Seiko 4520-789 represents an important milestone in Seiko's 1990 lineup. Powered by the 4520 caliber with 31j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-20039dabea32]

Also known as: Sportsmatic, Crown

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

44mm

Case Thickness

11.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1990

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