Seiko Cal. 6378 - 236

The Seiko 6378-236 represents an important milestone in Seiko's 1967 lineup. Powered by the 6378 caliber with 31j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-ad4dbcd9cd0a]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1967

Related Models

• Seiko 6286-740
• Seiko 7130-648
• Seiko 4480-833
• Seiko 7072-391
• Seiko 6382-682
• Seiko 6325-474
• Seiko 5265-346
• Seiko 6670-740
• Seiko 4421-973
• Seiko 7094-340
• Seiko 0777-496
• Seiko 6616-485