Seiko Cal. 6648 - 737

Released in 1968, the Cal. 6648 with design code 737 was part of Seiko's domestic market collection. Powered by the 6648 caliber with 20j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-7491a95e6439]

Also known as: Emperor, Flighty

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

13.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Cream

Jewels

20j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1968

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