Seiko Cal. 5242 - 255

The Seiko 5242-255 represents an important milestone in Seiko's 1965 lineup. Powered by the 5242 caliber with 24j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-411a4749c194]

Also known as: Sea Horse, Arnie

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Silver

Jewels

24j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1965

Related Models

• Seiko 6616-178
• Seiko 6620-316
• Seiko 6619-493
• Seiko 5269-770
• Seiko 4533-811
• Seiko 0747-128
• Seiko 5619-285
• Seiko 6123-213
• Seiko 6292-927
• Seiko 7157-744
• Seiko 6333-952
• Seiko 3882-914