Features: Soothing Sounds : This white noise lamp helps block disruptive environmental noises and makes you or your fall asleep easier and deeper. Precise & Timer Setting : Supports precise adjusting and 30min/ 60min/ 90min timer setting functions, you can use this white noise sound machine to built a comfortable environment . Soft Night & Sleep Aid : The sleep sound machine is equipped with night , which can give off soft that won't irritate babies or disturb their sleep. The sleep machine also support sleep aid mode, which can through transmission to relieve fatigue, for sleep. Built-in Rechargeable : With built-in battery that can be recharged by the included USB cable, the sound machine supports about 15H long usage after being fully charged, no need to worry about off problems. Compact & Portable for Travel : Compact size design. you can place the sleep machine on the stroller or crib easily and take it with you when go for a walk with . Specifications: Timer: 30min/ 60min/ 90min Capacity: 500mAh Port: Micro USB Type-C Packing List: 1 * Portable White Noise Machine