Seiko Cal. 6638 - 364

This Automatic model from 1993 features a 46mm Titanium case. Powered by the 6638 caliber with 30j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-10110ad3e038]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

46mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

80m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1993

Related Models

• Seiko 5630-476
• Seiko 6326-749
• Seiko 0743-367
• Seiko 6124-157
• Seiko 6685-689
• Seiko 3892-420
• Seiko 4576-427
• Seiko 7150-336
• Seiko 6636-285
• Seiko 0739-412
• Seiko 5680-236
• Seiko 0746-730