The underPillow SleepSound system lets you enjoy music from your smartphone or pre-recorded, soothing nature sounds in bed to help you fall asleep fast. The non-slip design stays in place even if you toss and turn, while high fidelity speakers deliver loud, lifelike sound even through dense foam pillows. Includes built-in pre-recorded sounds, or use the included connecting cord to listen to music from your smartphone, iPod®, MP3 or CD player, radio or TV. Features: Up to 98dB SPL Non-slip, ultra-thin padded design for optimal listening even if you toss and turn in bed High fidelity speakers deliver loud, lifelike stereo sound even through dense memory foam pillows Built-in, pre-recorded soothing nature sounds relax and soothe, providing relief for tinnitus sufferers Convenient, easy to use control unit clips to your pillow for easy access Ideal for listening to pre-recorded sounds or music from smartphones, iPod®, MP3/CD players, radio or TV (connecting cord included) Built-in selectable one hour timer with auto stop lowers volume gradually as users fall asleep Wall outlet AC power adapter included - no batteries to replace Dimensions: 380mm x 115mm x 28mm Includes: underPillow SleepSound with control 3.5mm audio cable USB to microUSB charging cable Pillow clip USB AC adapter User guide