yeah, the surgeon definitely has the most experience with Cochlear's devices, but he did a great job getting my AB implant in. He has done a LOT of implant surgeries over the years.
As for what comes with the implant, pft a lot of stuffs! Batteries, recharger, color covers/caps, cables/cords, extra ear hooks, drier kit (Zypher, AB includes a Zypher with the Neptune, and CA includes a zypher in their kit, don't know about Med El), etc. You'll end up with a box full of things for your implant(s). And Rocky Mountain is a 2 processor center, so you may end up with 2 sets of everything.
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