Advanced white noise therapy offers 4 distinct tones to help you fall asleep and stay asleep: "Soothe": Similar to that of a gentle rain， "Mask": Blocks external distractions， "Relax": Perfect to block snoring， "Calm": Great for tinnitus sufferers

Tone control allows you to manually adjust the tone of the white noise to best fit your needs

Bedside or portable - use adaptor or 4 "aa" batteries to get a good night's sleep wherever you are (batteries not included)

Built-in timer - set for 30， 60 or 90 minutes