Seiko Cal. 6657 - 743

The 6657-743 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6657 caliber with 35j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-1346d57a65f8]

Also known as: Helmet, Arnie

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

46mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Navy

Jewels

35j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1982

Related Models

• Seiko 7115-152
• Seiko 6164-529
• Seiko 6131-180
• Seiko 4521-708
• Seiko 3892-786
• Seiko 3869-162
• Seiko 6215-481
• Seiko 0719-232
• Seiko 6650-400
• Seiko 4481-236
• Seiko 6273-433
• Seiko 5266-533