Seiko Cal. 4521 - 729

The Seiko 4521-729 represents an important milestone in Seiko's 1965 lineup. It features a Green dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-3feb8cdc1bcc]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1965

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