Seiko Cal. 6390 - 712

The 6390-712 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6390 caliber with 20j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-851a8dbccac2]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Champagne

Jewels

20j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1979

Related Models

• Seiko 3861-474
• Seiko 7176-210
• Seiko 7055-369
• Seiko 6663-355
• Seiko 5628-547
• Seiko 4454-523
• Seiko 4417-144
• Seiko 6262-373
• Seiko 3855-153
• Seiko 4517-306
• Seiko 4597-807
• Seiko 6636-394