Seiko Cal. 7137 - 743

The Seiko 7137-743 represents an important milestone in Seiko's 1975 lineup. Powered by the 7137 caliber with 31j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-31a8d7411431]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Burgundy

Jewels

31j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1975

Related Models

• Seiko 0739-922
• Seiko 6275-337
• Seiko 5678-861
• Seiko 4414-241
• Seiko 6173-324
• Seiko 6296-382
• Seiko 7130-942
• Seiko 4599-864
• Seiko 5227-393
• Seiko 6154-542
• Seiko 6257-695
• Seiko 7129-280