Seiko Cal. 4420 - 694

The 4420-694 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4420 caliber with 30j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-7a6e60b5fa54]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

11.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Champagne

Jewels

30j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1969

Related Models

• Seiko 6283-328
• Seiko 7128-484
• Seiko 4590-536
• Seiko 5275-358
• Seiko 7131-669
• Seiko 5690-632
• Seiko 3873-638
• Seiko 3840-958
• Seiko 6634-189
• Seiko 0718-151
• Seiko 4415-156
• Seiko 3864-360