Seiko Cal. 4545 - 645

The 4545-645 is a sought-after Spring Drive piece from Seiko's golden era. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-563cb8af5260]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

14.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Silver

Jewels

21j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1972

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