Seiko Cal. 4540 - 227

The 4540-227 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4540 caliber with 31j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-9352d43b0ac7]

Also known as: Bellmatic, Flighty

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

39mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1968

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