como abrir los relojes para cambiarles la pila

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en este vídeo les enseño como abrir dos relojes
para esto necesitamos un desarmador plano y una herramienta para abrir relojes para el otro
espero que el vídeo les allá servido de ayuda
no olviden comentar
siles interesa comprar la herramienta aquí la consiguen
http://www.ebay.com/itm/Watch-Case-Screw-Back-Opener-Wrench-Repair-Tool-with-12-bits-BEST-VALUE-/220980728925?pt=LH_DefaultDomain_0&hash=item33737a545d#ht_3021wt_1016
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Видео como abrir los relojes para cambiarles la pila канала Danny m