Seiko Cal. 4420 - 515

The 4420-515 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4420 caliber with 18j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-5861b6bfd66d]

Also known as: World Timer, Crown

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

36mm

Case Thickness

8.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1975

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