Precise 0.65mm flat band 19.13.130mm steel ball 6.35&7mm chronograph test.

Precise 0.65mm flat band 19.13.130mm steel ball 6.35&7mm chronograph test.
Precise 0.65mm flat band 19.13.130mm steel ball 6.35&7mm chronograph test.
Precise 0.65mm flat band 19.13.130mm steel ball 6.35&7mm chronograph test.

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