Seiko Cal. 4428 - 663

Released in 1976, the Cal. 4428 with design code 663 was part of Seiko's domestic market collection. It features a White dial protected by a Acrylic crystal and offers 190m of water resistance. [seikata-wm-30b29eb492bc]

Also known as: Emperor

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

190m

Dial Color

White

Jewels

17j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1976

Related Models

• Seiko 5695-124
• Seiko 6612-676
• Seiko 5681-923
• Seiko 6637-784
• Seiko 0749-330
• Seiko 6684-633
• Seiko 6383-781
• Seiko 5289-128
• Seiko 0730-570
• Seiko 6367-422
• Seiko 6611-972
• Seiko 6311-128