Seiko Cal. 6639 - 788

The Seiko 6639-788 represents an important milestone in Seiko's 1993 lineup. It features a Burgundy dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-765de817b800]

Also known as: Bullhead, UFO

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Burgundy

Jewels

30j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1993

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