Seiko Cal. 4457 - 748

The 4457-748 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4457 caliber with 32j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-cd4159955f6a]

Also known as: Sumo, Bellmatic

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

40mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1966

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