Seiko Cal. 3840 - 437

The 3840-437 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3840 caliber with 19j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-cb59a742dec1]

Also known as: Silverwave

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1978

Related Models

• Seiko 6173-938
• Seiko 0796-858
• Seiko 6689-571
• Seiko 4543-107
• Seiko 4514-747
• Seiko 7073-445
• Seiko 6355-259
• Seiko 3864-878
• Seiko 3868-282
• Seiko 3874-803
• Seiko 6168-739
• Seiko 3878-103