Seiko Cal. 3866 - 877

Released in 1974, the Cal. 3866 with design code 877 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-6f2b6aaa3ce0]

Also known as: Bullhead, UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1974

Related Models

• Seiko 5283-747
• Seiko 4570-600
• Seiko 6666-218
• Seiko 3855-110
• Seiko 6663-527
• Seiko 4447-603
• Seiko 5693-404
• Seiko 4491-119
• Seiko 7152-622
• Seiko 7015-443
• Seiko 4576-835
• Seiko 5292-511