Seiko Cal. 6681 - 816

The Seiko 6681-816 represents an important milestone in Seiko's 1977 lineup. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-b56da0754972]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Burgundy

Jewels

23j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1977

Related Models

• Seiko 4478-540
• Seiko 4447-805
• Seiko 6130-412
• Seiko 7051-639
• Seiko 3880-557
• Seiko 5279-394
• Seiko 0798-928
• Seiko 5210-499
• Seiko 5270-789
• Seiko 6187-949
• Seiko 7183-950
• Seiko 0776-814