Seiko Cal. 5644 - 689

The Seiko 5644-689 represents an important milestone in Seiko's 1989 lineup. It features a Green dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-df4cdf040ea7]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

10.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Green

Jewels

35j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1989

Related Models

• Seiko 4510-276
• Seiko 4582-711
• Seiko 4534-503
• Seiko 3875-739
• Seiko 6630-543
• Seiko 5687-260
• Seiko 5292-735
• Seiko 6391-410
• Seiko 5645-984
• Seiko 4460-949
• Seiko 6372-892
• Seiko 6295-572