Seiko Cal. 0788 - 639

The Seiko 0788-639 represents an important milestone in Seiko's 1990 lineup. It features a Green dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-1c057d1ad2cf]

Also known as: Sumo, Flighty

Specifications

Movement

Solar

Case Material

Titanium

Case Width

46mm

Case Thickness

11.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1990

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