Seiko Cal. 5640 - 764

The 5640-764 is a sought-after Automatic piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-93a31cac8884]

Also known as: Rally

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

9.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1994

Related Models

• Seiko 4587-234
• Seiko 4520-583
• Seiko 3827-530
• Seiko 3894-769
• Seiko 3860-118
• Seiko 6331-320
• Seiko 4529-570
• Seiko 7019-560
• Seiko 7085-214
• Seiko 4528-192
• Seiko 6662-976
• Seiko 3857-827