Seiko Cal. 7121 - 240

The Seiko 7121-240 represents an important milestone in Seiko's 1968 lineup. Powered by the 7121 caliber with 34j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-312afaf9cdb5]

Also known as: Bullhead, Golden Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1968

Related Models

• Seiko 5251-418
• Seiko 6164-251
• Seiko 4499-924
• Seiko 7068-799
• Seiko 4579-939
• Seiko 6674-248
• Seiko 6129-600
• Seiko 0721-209
• Seiko 7148-319
• Seiko 0728-373
• Seiko 6260-867
• Seiko 5241-737