Seiko Cal. 6131 - 387

The Seiko 6131-387 represents an important milestone in Seiko's 1989 lineup. Powered by the 6131 caliber with 30j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-a1cc863a80b9]

Also known as: Sumo, Panda

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1989

Related Models

• Seiko 6698-572
• Seiko 5247-351
• Seiko 3817-647
• Seiko 6348-346
• Seiko 4543-506
• Seiko 0778-567
• Seiko 3816-564
• Seiko 3845-545
• Seiko 5219-343
• Seiko 7169-368
• Seiko 7121-673
• Seiko 6149-318