Seiko Cal. 3840 - 420

This Hand-Winding model from 1965 features a 40mm Stainless Steel case. It features a Green dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-74c9b0818af7]

Also known as: Silverwave, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1965

Related Models

• Seiko 5653-788
• Seiko 6274-682
• Seiko 6318-550
• Seiko 7132-393
• Seiko 5213-300
• Seiko 4491-657
• Seiko 6140-877
• Seiko 4590-528
• Seiko 5657-677
• Seiko 3835-559
• Seiko 7135-719
• Seiko 4540-719