Seiko Cal. 3840 - 897

Released in 1972, the Cal. 3840 with design code 897 was part of Seiko's domestic market collection. Powered by the 3840 caliber with 30j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-a22ace71b9ba]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

44mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1972

Related Models

• Seiko 0759-465
• Seiko 7157-800
• Seiko 0799-499
• Seiko 3831-295
• Seiko 6313-820
• Seiko 0740-108
• Seiko 7127-478
• Seiko 7035-716
• Seiko 0770-496
• Seiko 0776-773
• Seiko 3883-852
• Seiko 6172-917