This portable unit combines a sound generator with a Bluetooth speaker, so you only have to pack one device to enjoy your own music and a restful night’s sleep while traveling. Exclusively from Hammacher Schlemmer, the sound machine comes preloaded with 20 soothing tracks that lull you to sleep with white noise or calming nature sounds, helping to combat jet lag or tune out the racket of an unfamiliar hotel room. The unit pairs wirelessly via Bluetooth to an MP3 player or other audio source up to 30' away, so you can fall asleep to your own recordings or simply play music away from home without a tangle of cables. The speaker produces rich audio and robust bass tones and has volume and track controls. Rechargeable battery provides 5-8 hours of run time after a 2-3 hour charge from the USB adapter. 2 1/2" H x 2 1/2" Diam. (8 oz.)