Seiko Cal. 4427 - 320

The 4427-320 is a sought-after Solar piece from Seiko's golden era. Powered by the 4427 caliber with 28j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-a11ae8c74ff4]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

28j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1995

Related Models

• Seiko 6627-311
• Seiko 0792-835
• Seiko 6143-691
• Seiko 6114-705
• Seiko 4461-648
• Seiko 0796-159
• Seiko 4443-430
• Seiko 7011-187
• Seiko 4566-753
• Seiko 0760-341
• Seiko 5265-364
• Seiko 4521-927