Seiko Cal. 6378 - 180

The Seiko 6378-180 represents an important milestone in Seiko's 1974 lineup. With its 22mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-84cb5ca62d0b]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

23j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1974

Related Models

• Seiko 6154-718
• Seiko 4420-189
• Seiko 3854-375
• Seiko 5682-464
• Seiko 6143-536
• Seiko 3874-544
• Seiko 5296-477
• Seiko 7149-523
• Seiko 6243-254
• Seiko 6170-770
• Seiko 7192-328
• Seiko 6271-435