Seiko Cal. 3878 - 678

Released in 1985, the Cal. 3878 with design code 678 was part of Seiko's domestic market collection. Powered by the 3878 caliber with 36j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-4ee8dfdb5720]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1985

Related Models

• Seiko 6246-685
• Seiko 7094-761
• Seiko 7169-313
• Seiko 5242-235
• Seiko 4449-891
• Seiko 6260-818
• Seiko 5299-688
• Seiko 0769-861
• Seiko 7182-439
• Seiko 4536-120
• Seiko 0725-885
• Seiko 7025-429