Seiko Cal. 4428 - 956

The 4428-956 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4428 caliber with 22j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-69d26aa5fabe]

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Silver

Jewels

22j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1966

Related Models

• Seiko 7119-733
• Seiko 7127-431
• Seiko 7148-309
• Seiko 3869-848
• Seiko 6623-632
• Seiko 7026-914
• Seiko 7173-111
• Seiko 5216-797
• Seiko 4518-432
• Seiko 6268-751
• Seiko 6625-980
• Seiko 0754-873