Seiko Cal. 3840 - 820

This Hand-Winding model from 1981 features a 44mm Gold-Plated case. Powered by the 3840 caliber with 23j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-7962c4b3ee86]

Also known as: Flighty

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1981

Related Models

• Seiko 7036-520
• Seiko 5243-581
• Seiko 4420-525
• Seiko 6129-850
• Seiko 4475-387
• Seiko 5627-837
• Seiko 6685-510
• Seiko 6369-114
• Seiko 3899-387
• Seiko 6113-116
• Seiko 6318-655
• Seiko 4512-610