Seiko Cal. 3866 - 729

The 3866-729 is a sought-after Spring Drive piece from Seiko's golden era. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-963fd1bd355d]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Silver

Jewels

18j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1974

Related Models

• Seiko 7087-824
• Seiko 3827-180
• Seiko 4469-578
• Seiko 7148-450
• Seiko 0729-681
• Seiko 4588-512
• Seiko 7111-405
• Seiko 6650-104
• Seiko 3859-541
• Seiko 6379-434
• Seiko 3852-217
• Seiko 6322-597