Seiko Cal. 4427 - 421

The Seiko 4427-421 represents an important milestone in Seiko's 1980 lineup. Powered by the 4427 caliber with 19j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-9c1496794393]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

42mm

Case Thickness

13.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

70m

Dial Color

Champagne

Jewels

19j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1980

Related Models

• Seiko 4469-121
• Seiko 4424-234
• Seiko 7092-881
• Seiko 6663-156
• Seiko 5283-766
• Seiko 5294-693
• Seiko 7051-269
• Seiko 0750-709
• Seiko 5655-207
• Seiko 7075-946
• Seiko 4465-572
• Seiko 6644-321