Seiko Cal. 5240 - 960

The Seiko 5240-960 represents an important milestone in Seiko's 1968 lineup. Powered by the 5240 caliber with 21j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-27b413cea6cd]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

14.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1968

Related Models

• Seiko 6229-928
• Seiko 6617-360
• Seiko 5665-457
• Seiko 5273-287
• Seiko 3863-437
• Seiko 0747-288
• Seiko 5211-473
• Seiko 0775-755
• Seiko 7143-939
• Seiko 0714-370
• Seiko 7069-771
• Seiko 7153-459