Seiko Cal. 6390 - 710

The 6390-710 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6390 caliber with 20j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-59d56b7e6a01]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Silver

Jewels

20j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1965

Related Models

• Seiko 4465-127
• Seiko 6356-707
• Seiko 3851-120
• Seiko 6622-479
• Seiko 5281-169
• Seiko 7030-844
• Seiko 6660-683
• Seiko 3816-508
• Seiko 4539-567
• Seiko 4446-838
• Seiko 4443-259
• Seiko 7123-935