[10 Soothing Sounds] The baby sleep machine has 10 soothing sounds, including rain sound, heartbeat, white noise, lullaby *3, frog sound, bird sound, ocean sound, which helps block disruptive environmental noises and makes you or your baby fall asleep easier and deeper. [Precise Volume & Timer Setting] Supports 9 levels of precise volume adjusting and 1H/2H/3H timer setting functions, you can use this white noise sound machine to built a comfortable environment baby sleeping. [7 Colors Star Night Light] The sleep sound machine is equipped with beautiful star night lights, which can give off 7 colors of soft light that won't irritate babies or disturb their sleep. [Built-in Rechargeable Battery] With built-in 250mAh battery that can be recharged by the included USB cable, the baby sound machine supports long time usage after being fully charged, no need to worry about power off problems. [Compact & Portable for Travel] Compact size design, and net weight is only about 58g. Comes with a lanyard, you can hang the baby sleep machine on the stroller easily and take it with you when go for a walk with baby. Battery Capacity:250mAh Charging Port:Type-C Input:DC 5V 1A Music:10 Item Size:9.2x8x3cm/3.6x3.1x1.1in Item Weight:58g/2oz Colour:Orange Material:ABS Package Contents: 1 * lanyard 1 * music sleep monitor 1 * charging cable