Seiko Cal. 3815 - 178

The 3815-178 is a sought-after Quartz piece from Seiko's golden era. Powered by the 3815 caliber with 31j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-cc0a8649bc42]

Also known as: Bullhead, Navigator

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1982

Related Models

• Seiko 6125-428
• Seiko 4487-711
• Seiko 5691-581
• Seiko 5611-966
• Seiko 7040-830
• Seiko 7021-635
• Seiko 4438-287
• Seiko 5618-671
• Seiko 6240-772
• Seiko 6348-164
• Seiko 6263-696
• Seiko 6157-188