Seiko Cal. 0721 - 550

Seiko 0721-550

The Seiko 0721-550 represents an important milestone in Seiko's 1965 lineup. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-3f263f332a41]

Also known as: Panda, Crown

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
12.7mm
Lug Width
21mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
150m
Dial Color
Burgundy
Jewels
36j
Frequency
21,600 bph
Power Reserve
39 hours
Year
1965

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