Seiko Cal. 6644 - 597

The 6644-597 is a sought-after Spring Drive piece from Seiko's golden era. It features a Burgundy dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-182cadeb60d6]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

12.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Burgundy

Jewels

29j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1994

Related Models

• Seiko 6296-729
• Seiko 4578-875
• Seiko 6315-775
• Seiko 6610-274
• Seiko 4412-614
• Seiko 6146-891
• Seiko 4596-558
• Seiko 7060-520
• Seiko 7072-237
• Seiko 5634-499
• Seiko 4453-791
• Seiko 3827-173