Seiko Cal. 6648 - 839

This Hand-Winding model from 1995 features a 46mm Hardlex-Coated Steel case. Powered by the 6648 caliber with 21j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-7214efd50d41]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1995

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