Seiko Cal. 6678 - 421

The Seiko 6678-421 represents an important milestone in Seiko's 1998 lineup. Powered by the 6678 caliber with 19j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-ac204aa297d2]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

15.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

White

Jewels

19j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1998

Related Models

• Seiko 6162-677
• Seiko 0775-480
• Seiko 6689-893
• Seiko 6295-621
• Seiko 6674-370
• Seiko 4439-198
• Seiko 7174-933
• Seiko 5615-627
• Seiko 6170-924
• Seiko 6344-652
• Seiko 7148-131
• Seiko 6181-105