Seiko Cal. 6648 - 755

Released in 1972, the Cal. 6648 with design code 755 was part of Seiko's domestic market collection. Powered by the 6648 caliber with 24j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-73642e36d58d]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Green

Jewels

24j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1972

Related Models

• Seiko 6688-271
• Seiko 3851-169
• Seiko 4483-855
• Seiko 6251-811
• Seiko 6370-435
• Seiko 6297-951
• Seiko 5636-496
• Seiko 7111-500
• Seiko 6125-858
• Seiko 3846-635
• Seiko 4560-803
• Seiko 4565-265