Seiko Cal. 7140 - 840

The Seiko 7140-840 represents an important milestone in Seiko's 1993 lineup. It features a Black dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-e7aad7680161]

Also known as: Tuna, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1993

Related Models

• Seiko 6185-968
• Seiko 5227-963
• Seiko 6198-439
• Seiko 7164-527
• Seiko 7193-584
• Seiko 5678-674
• Seiko 5658-356
• Seiko 0784-396
• Seiko 3898-703
• Seiko 4545-903
• Seiko 5222-629
• Seiko 5642-145