Seiko Cal. 4581 - 721

The 4581-721 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4581 caliber with 34j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-33e43349ae42]

Also known as: Silverwave

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Navy

Jewels

34j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1987

Related Models

• Seiko 4418-975
• Seiko 7074-437
• Seiko 7175-570
• Seiko 7033-605
• Seiko 5615-542
• Seiko 4555-198
• Seiko 5284-998
• Seiko 0719-464
• Seiko 7189-364
• Seiko 6223-997
• Seiko 4567-104
• Seiko 5672-766