Seiko Cal. 7139 - 107

The Seiko 7139-107 represents an important milestone in Seiko's 1979 lineup. It features a Green dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-877a02b99b5a]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1979

Related Models

• Seiko 0727-172
• Seiko 4572-369
• Seiko 3849-657
• Seiko 4451-297
• Seiko 6320-580
• Seiko 7172-497
• Seiko 7027-506
• Seiko 4479-370
• Seiko 7121-100
• Seiko 4412-837
• Seiko 6672-276
• Seiko 4476-446