Seiko Cal. 6380 - 639

The Seiko 6380-639 represents an important milestone in Seiko's 1966 lineup. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-1cd752ec9934]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1966

Related Models

• Seiko 7070-216
• Seiko 5217-799
• Seiko 6263-603
• Seiko 0753-318
• Seiko 4470-409
• Seiko 4538-541
• Seiko 7136-280
• Seiko 6268-670
• Seiko 5291-110
• Seiko 3848-277
• Seiko 6691-871
• Seiko 5234-277