Seiko Cal. 6378 - 878

This Quartz model from 1988 features a 39mm Two-Tone case. Powered by the 6378 caliber with 17j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-1492a4091842]

Also known as: Silverwave, Flighty

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1988

Related Models

• Seiko 0765-528
• Seiko 3864-467
• Seiko 6358-137
• Seiko 7059-958
• Seiko 6143-601
• Seiko 7162-517
• Seiko 6645-600
• Seiko 3841-838
• Seiko 6189-489
• Seiko 6196-815
• Seiko 5272-335
• Seiko 4471-777