Seiko Cal. 4428 - 817

The 4428-817 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-0efc80816889]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1971

Related Models

• Seiko 6339-112
• Seiko 6278-952
• Seiko 4420-538
• Seiko 7058-454
• Seiko 6254-897
• Seiko 7012-433
• Seiko 5630-987
• Seiko 4445-708
• Seiko 6394-496
• Seiko 3877-187
• Seiko 4579-387
• Seiko 3864-600