Seiko Cal. 4478 - 840

The Seiko 4478-840 represents an important milestone in Seiko's 1996 lineup. Powered by the 4478 caliber with 30j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-260ed496058f]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

30j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1996

Related Models

• Seiko 6353-862
• Seiko 5633-723
• Seiko 6626-658
• Seiko 5626-525
• Seiko 4463-161
• Seiko 5263-300
• Seiko 6258-400
• Seiko 7029-222
• Seiko 4479-713
• Seiko 6333-113
• Seiko 7025-595
• Seiko 4473-589