Seiko Cal. 5639 - 767

The 5639-767 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5639 caliber with 21j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-95782c07c894]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

130m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1987

Related Models

• Seiko 4474-964
• Seiko 3861-681
• Seiko 4555-508
• Seiko 7028-379
• Seiko 7195-518
• Seiko 5257-577
• Seiko 5234-220
• Seiko 7079-424
• Seiko 6261-511
• Seiko 4599-176
• Seiko 3836-819
• Seiko 4436-474