Seiko Cal. 5638 - 323

The 5638-323 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Navy dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-efcf88c437c4]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1969

Related Models

• Seiko 0717-443
• Seiko 6336-736
• Seiko 6197-807
• Seiko 7065-975
• Seiko 6155-738
• Seiko 3869-718
• Seiko 7033-619
• Seiko 6190-348
• Seiko 7191-441
• Seiko 0712-791
• Seiko 6647-570
• Seiko 7078-746