Seiko Cal. 0738 - 647

The 0738-647 is a sought-after Solar piece from Seiko's golden era. Powered by the 0738 caliber with 21j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-ed064a7ad6f9]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

8.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Green

Jewels

21j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1971

Related Models

• Seiko 6165-953
• Seiko 6665-963
• Seiko 3864-569
• Seiko 6257-124
• Seiko 6169-707
• Seiko 5669-925
• Seiko 7164-643
• Seiko 6182-830
• Seiko 6159-268
• Seiko 3836-915
• Seiko 4536-233
• Seiko 7060-489