Seiko Cal. 5644 - 107

The 5644-107 is a sought-after Spring Drive piece from Seiko's golden era. It features a Burgundy dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-5072035e1462]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Burgundy

Jewels

23j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1977

Related Models

• Seiko 5266-279
• Seiko 6664-642
• Seiko 7077-961
• Seiko 6192-550
• Seiko 4471-893
• Seiko 6393-402
• Seiko 3822-601
• Seiko 6676-525
• Seiko 4413-258
• Seiko 5641-562
• Seiko 7028-360
• Seiko 7075-725