Seiko Cal. 6644 - 633

This Kinetic model from 1975 features a 41mm Titanium case. It features a Navy dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-b95d56f9d3f3]

Also known as: Crown

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

41mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1975

Related Models

• Seiko 4453-446
• Seiko 6148-925
• Seiko 5212-415
• Seiko 4579-283
• Seiko 7073-474
• Seiko 7044-677
• Seiko 6659-467
• Seiko 6271-715
• Seiko 4530-633
• Seiko 6677-896
• Seiko 5627-738
• Seiko 6272-356