Seiko Cal. 4527 - 651

The Seiko 4527-651 represents an important milestone in Seiko's 1972 lineup. Powered by the 4527 caliber with 21j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-716e9020b7b7]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

42mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1972

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