Description: White Noise Machine: The White Noise Machine features 9 natural sounds and soothing soft music, making you feel comfortable and relaxed, enjoy your favorite music and let you fall asleep easily.Function: Sleeping Machine can cover external noise, timing function, warm light, equipped with night light, adjustable volume, sound effects: summer night, rain sound, nocturne, lullaby, stream, waves, birdsong, light music, white noise.Material: Sleeping Sound Device is made of PP and electronic components, which is not easily damaged and ensures it can withstand daily use.Portable Design: The White Noise Sound Machine is compact in size and lightweight, easy to carry and store, and can be easily put into a bag or suitcase without taking up space.Ideal Gift: Portable Sound Machine is an ideal holiday, party and birthday gift for family, friends and children. Great for rest and work use. Specification: Material: PP and electronic componentsWorking current: 1APower: 1W: DC5VPower socket: USB RechargeableBattery capacity: 1200mahCharging time: about 1.5 hoursBattery life: about 36 hours Size Chart: 8cmx8cmx3.3cm/3.15inchx3.15inchx1.30inch Package Includes: 1 White Noise Sleep Device Note: Please allow slightly errors due to manual measurement and different monitors.