Sigma ROX HR Transmitter and Strap
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<div style="text-align:left">
<b>[Product Information]</b><br>
<ul>
<li>For ROX & STS models with cadence</li>
<li>Digitally coded chest strap</li>
<li>EKG precise</li>
<li>Tool free battery change</li>
<li>Compatible BC1909,BC2209 and ROX computers Battery included #2232</li>
</ul>
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