Seiko Cal. 7139 - 643

The 7139-643 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7139 caliber with 19j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-7cada2467bb5]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Black

Jewels

19j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1974

Related Models

• Seiko 3833-804
• Seiko 6234-347
• Seiko 6674-844
• Seiko 4428-565
• Seiko 7055-491
• Seiko 4418-839
• Seiko 4468-979
• Seiko 3893-427
• Seiko 4429-635
• Seiko 6324-448
• Seiko 6686-504
• Seiko 7082-389