$25 off orders over $75 + free shipping with rebate. Promo code: FLINGThe ultrathin UnderPillow Sleep Sound™ System delivers crisp, clear audio to help you relax and fall asleep — even through dense foam pillows. Simply place it under your pillow and turn it on. A built-in flash drive comes preinstalled with 27 nature sounds, with 80MB of free space to add your own songs or soothing sounds. An auxiliary line in jack lets you connect any smartphone or MP3 player to hear your favorite playlist. Features backlit control panel and an optional timer that gradually reduces the volume, then shuts off the device after 60 minutes. Click Here for Actual Sound Samples