Seiko Cal. 4522 - 540

The 4522-540 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4522 caliber with 22j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-f7b0333fdb81]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

22j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1981

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