The President XP-400 is a mobile transceiver. It covers 26.965-27.405 MHz for both transmit and receive. The receiver system is superheterodyne with an internal speaker for audio output.  It operates on 13.8 V DC. 
Estimating the value of a rig can be challenging. We collect prices paid by real hams over the years to help you estimate the value of a used President XP-400. Just bought or sold this model? Let us know what you traded it for and help other ham operators!
These estimates are based on the following prices: