Seiko Cal. 6378 - 994

The Seiko 6378-994 represents an important milestone in Seiko's 1991 lineup. Powered by the 6378 caliber with 36j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-8bd9fb0f715d]

Also known as: Silverwave, Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Green

Jewels

36j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1991

Related Models

• Seiko 6653-283
• Seiko 0781-510
• Seiko 6655-441
• Seiko 5217-127
• Seiko 6235-933
• Seiko 7075-571
• Seiko 6391-639
• Seiko 5645-149
• Seiko 0773-335
• Seiko 6284-515
• Seiko 6247-436
• Seiko 7158-749