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