Seiko Cal. 4448 - 506

The 4448-506 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4448 caliber with 19j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-7318a8f55a72]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

19j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1991

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