Seiko Cal. 5613 - 420

The 5613-420 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5613 caliber with 28j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-97c08841a7bd]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Silver

Jewels

28j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1983

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