Hey all, this Christmas I received a Cobra XRS 757 Radar Detector from Wal-Mart (http://www.walmart.com/catalog/produ...uct_id=4642483) . It has a rich feature list, but is lacking something I really wanted- cordless operation. It is the mid-level Cobra radar detector that Wal-Mart sells. The high grade is a Cobra XRS 797 (http://www.walmart.com/catalog/produ...uct_id=4642482) . In the description for the 797, it says that it includes: *Battery Voltage Display that provides awareness of battery conditions *Low Voltage Warning provides an alert when battery voltage falls below 11.9 volts This would lead me to believe that this is battery operated, but then again, it comes with a DC car cord as well. I haven't been able to get a definite answer on this at all because no where does it just come out and say whether it can be operated cordless or not. Is the Cobra XRS 797 a cordless, battery operated detector? Thanks!