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Amazon.com: Comimark 30Pcs 32.768 KHz 32768HZ Crystal Oscillator 2 x 6 mm : Industrial & Scientific
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X-DREE 10 Pcs 2mm x 6mm 32.768KHz 32.768k Hz 6PF Quartz Crystal Oscillator(Oscillatore a cristallo di quarzo da 10 pz 2 x 6 mm 32,768 KHz 32,768 k Hz 6PF - - Amazon.com