Sangean Electronics offers the ATS 404 that tunes continuously shortwave bands and any frequency in-between. It automatically scans every memory preset and plays each in sequence for 7 seconds. Also it automatically determines all memory presets based upon signal strength of station (Atuto Tuning System). A waking system is also present - its repeating beep tone increases in volume every 15 seconds for 1 minute (Humane Wake System). Operates off 6V DC power Adapter ADPATS-808 (not included) or 4 "AA" batteries (not included). Included. Earbuds, carrying pouch.