Seiko Cal. 6635 - 743

The 6635-743 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Navy dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-8e268ff0e4c4]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

10.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1985

Related Models

• Seiko 6112-400
• Seiko 5658-735
• Seiko 5223-887
• Seiko 5674-595
• Seiko 3840-266
• Seiko 7066-420
• Seiko 7185-306
• Seiko 4527-136
• Seiko 6394-442
• Seiko 4566-363
• Seiko 0749-511
• Seiko 6336-669