Seiko Cal. 4420 - 852

The 4420-852 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4420 caliber with 36j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-3cda6c0a789e]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

60m

Dial Color

Silver

Jewels

36j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1999

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