Seiko Cal. 6681 - 721

The Seiko 6681-721 represents an important milestone in Seiko's 1981 lineup. It features a White dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-a6121d05c3fa]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

White

Jewels

23j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1981

Related Models

• Seiko 3886-310
• Seiko 6346-241
• Seiko 5631-675
• Seiko 0796-775
• Seiko 5624-780
• Seiko 3897-694
• Seiko 0747-632
• Seiko 6134-979
• Seiko 6230-688
• Seiko 6336-626
• Seiko 4559-340
• Seiko 4575-468