Seiko Cal. 6648 - 723

This Solar model from 1972 features a 37mm Two-Tone case. Powered by the 6648 caliber with 27j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-25e019970e32]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1972

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