Seiko Cal. 7040 - 747

The 7040-747 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7040 caliber with 35j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-4965edc63da9]

Also known as: Tuna, Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

35j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1982

Related Models

• Seiko 7129-234
• Seiko 6381-607
• Seiko 6673-232
• Seiko 7073-626
• Seiko 6333-266
• Seiko 0724-109
• Seiko 3865-990
• Seiko 3831-617
• Seiko 7184-606
• Seiko 7033-782
• Seiko 6340-201
• Seiko 6236-960