Seiko Cal. 6648 - 905

The 6648-905 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6648 caliber with 30j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-327f8e9665a9]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

White

Jewels

30j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1994

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