Seiko Cal. 4486 - 820

The Seiko 4486-820 represents an important milestone in Seiko's 1971 lineup. Powered by the 4486 caliber with 32j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-771668fa3855]

Also known as: Helmet, Bellmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1971

Related Models

• Seiko 7136-787
• Seiko 5698-206
• Seiko 7112-493
• Seiko 3822-252
• Seiko 3863-129
• Seiko 4465-929
• Seiko 6256-233
• Seiko 5610-859
• Seiko 3833-774
• Seiko 6294-424
• Seiko 6341-435
• Seiko 0752-522