Seiko Cal. 5644 - 355

The Seiko 5644-355 represents an important milestone in Seiko's 1986 lineup. It features a Black dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-a560879e049d]

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1986

Related Models

• Seiko 6319-156
• Seiko 6682-831
• Seiko 6399-647
• Seiko 4556-341
• Seiko 5630-350
• Seiko 7028-395
• Seiko 7191-232
• Seiko 4418-577
• Seiko 4436-930
• Seiko 6183-382
• Seiko 4432-932
• Seiko 0724-230