Swivl C Series Marker Audio Recording， 2-pack， Black (SW3322-M2)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> C SERIES- Compatible with the Swivel C Series Robot </span></li><li><span class="a-list-item"> MULTI-CHANNEL AUDIO - Connect up to 4 markers to wirelessly capture 4 audio channels from every corner of the classroom. </span></li><li><span class="a-list-item"> SOFTWARE - Select the audio channel you want to listen to during playback on Swivel Cloud. </span></li><li><span class="a-list-item"> C1， C3， C5 - Add a marker 2-pack to any C1 robot to make it a C3， add a second marker 2-pack to make it a C5. </span></li><li><span class="a-list-item"> INCLUDES - 2x additional markers， 2x wrist lanyards， marker charger cable， and color sticker pack </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41-3TqmQr6L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/412kEuJVQbL.jpg" noproxy>