Seiko Cal. 6639 - 710

The Seiko 6639-710 represents an important milestone in Seiko's 1987 lineup. It features a Silver dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-c28fe15bdacb]

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

10.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Silver

Jewels

27j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1987

Related Models

• Seiko 4555-355
• Seiko 5272-692
• Seiko 5684-890
• Seiko 4570-201
• Seiko 6161-372
• Seiko 6132-516
• Seiko 5675-298
• Seiko 6278-431
• Seiko 0710-694
• Seiko 7131-177
• Seiko 0723-302
• Seiko 6146-432