Ooma Telo VoIP Device with Bluetooth Adapter (Certified Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty Works with any corded or cordless phone; easy installation with no computer required Includes free caller-ID, call-waiting, 911 and many other calling features Ooma prioritizes voice packets without slowing down the rest of your network so you can enjoy crystal-clear calls even while uploading video clips Uses the same encryption technology governments use to protect classified data (which makes Ooma even safer than your old landline)