Seiko Cal. 4470 - 340

The 4470-340 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4470 caliber with 21j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-b7c880b2c88b]

Also known as: Crown, Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

9.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1997

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