Seiko Cal. 6681 - 690

This Kinetic model from 1976 features a 41mm Hardlex-Coated Steel case. Powered by the 6681 caliber with 33j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-055ca28cc6c3]

Also known as: UFO, Sea Horse

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1976

Related Models

• Seiko 7139-189
• Seiko 4496-931
• Seiko 5279-911
• Seiko 6234-242
• Seiko 0715-836
• Seiko 6111-204
• Seiko 6390-606
• Seiko 5215-756
• Seiko 6695-420
• Seiko 3871-961
• Seiko 5251-361
• Seiko 5281-205