Seiko Cal. 6638 - 919

The 6638-919 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6638 caliber with 21j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-83b990f8b69c]

Also known as: Silverwave, Golden Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

30m

Dial Color

White

Jewels

21j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1987

Related Models

• Seiko 6682-826
• Seiko 5610-504
• Seiko 4424-708
• Seiko 6688-454
• Seiko 7132-539
• Seiko 4576-522
• Seiko 4589-445
• Seiko 6131-637
• Seiko 6181-152
• Seiko 6365-398
• Seiko 6194-268
• Seiko 7033-365