Seiko Cal. 4428 - 368

The Seiko 4428-368 represents an important milestone in Seiko's 1999 lineup. Powered by the 4428 caliber with 33j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-a9d48f3b789e]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

43mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

White

Jewels

33j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1999

Related Models

• Seiko 6663-870
• Seiko 6241-240
• Seiko 4494-188
• Seiko 7166-867
• Seiko 5642-456
• Seiko 7016-260
• Seiko 6160-144
• Seiko 6381-991
• Seiko 6277-286
• Seiko 5247-334
• Seiko 6614-306
• Seiko 3835-745