Product DescriptionFeature:1. White Noise for Better Sleep: With white noise, this baby helps relieve fatigue and improve sleep quality, making it easier to fall asleep quickly and soundly.2. 18 Soothing Sounds: The white noise machine has 18 different soothing sounds that can help you relax and enter a state of deep sleep. In addition, the breathing light sleep aid function adjusts its brightness in sync with your breathing rhythm to enhance relaxation and help you fall asleep.3. Long Battery Life: With a 300mAh battery, this white noise sound machine can be used for up to 18 hours on a single charge, ensuring it stays with you all night long.4. Blocks Out External Noise: In addition to helping you sleep, white noise can also block out external noises and distractions, allowing you to focus better on work or study.5. Simple Touch Control: The touch-sensitive buttons make it easy to control the machine's settings.Specification:Model: M5Material: ABS+PC+silicone+electronic componentsColor: WhitePolymer battery: 300mAhInput voltage: DC5V=0-1APower: 1WCharging time: 1.5 hoursWhite noise usage time: 18 hoursSize: about 40 * 74mm/1.57 * 2.91inchPackage Included: 1 pcNote:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement.***RUYI821**