Sharper Image USB Sleep Therapy Sound Soother Soothing sounds - Relax and unwind with 12 featured soundscapes from ocean surf to rainforest Automatic timer - Set a timer for 30, 60 or 90 minutes of sound that automatically powers down Calming - Drift off as the volume gradually ...Sharper Image USB Sleep Therapy Sound Soother Soothing sounds - Relax and unwind with 12 featured soundscapes from ocean surf to rainforest Automatic timer - Set a timer for 30, 60 or 90 minutes of sound that automatically powers down Calming - Drift off as the volume gradually descreases in the last 10 minutes of each program Adjustable - Control the backlight brightness and volume of the speaker or attached headphones 4 AA 1.5V batteries are required and an optional USB-A AC adapter (not included) One micro USB charging cable is included