Seiko Cal. 6641 - 664

This Kinetic model from 1986 features a 44mm Titanium case. It features a Green dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-3dff919ded21]

Also known as: World Timer

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

44mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1986

Related Models

• Seiko 5214-759
• Seiko 6317-372
• Seiko 6670-873
• Seiko 0715-689
• Seiko 3863-984
• Seiko 6211-580
• Seiko 6264-470
• Seiko 6190-473
• Seiko 7040-290
• Seiko 5672-901
• Seiko 5211-618
• Seiko 6610-420