Seiko Cal. 4421 - 817

The 4421-817 is a sought-after Kinetic piece from Seiko's golden era. It features a White dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-2f2d07461ac2]

Also known as: Tuna, UFO

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

White

Jewels

22j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1991

Related Models

• Seiko 3843-450
• Seiko 4548-218
• Seiko 6347-817
• Seiko 0785-869
• Seiko 7053-702
• Seiko 4596-153
• Seiko 7020-775
• Seiko 6673-167
• Seiko 6651-909
• Seiko 6387-386
• Seiko 6177-410
• Seiko 6161-789