White  Noise  Machine  Sleep  Sound  Machine  For  Sleeping   and amp;  Relaxation  for  Baby  ，Adult，Office，Travel.  Built  in  USB  Timer..A-styleProduct parameters:Material: ABS + PC + silicone + electronic componentsSize: 80 * 80 * 33mmInput voltage: DC5VWorking voltage: 4.2VCharging current: 1APower: 1WBattery capacity: 1200MaCharging mode: USBCharging time: 1.5hUse time: 36hCertification: FCC / CEProduct list:1 * host1*usb1 * instruction manualProduct selling point:9 kinds of smooth and natural sound: white noise, waves, birds, waterfalls, crickets, running water and 3 lullabys. Choose the sound according to your preferences and needs to create a quiet environment for you to quickly fall asleep and have a complete rest.B-styleProduct parameters:Model: Q3Color: whiteMaterial: ABS + silica gelVoltage input: DC5V = 0.5APower: 1WBattery capacity: 300mAhUse time: 23 hours (about 36 hours)Charging time: 1 hourCertification: CE, FCC, RoshProduct weight: 66gPackage weight: 125gProduct size: 93 * 80 * 28mmPackage size: 158 * 106 * 31mmOuter box size: 47 * 35 * 45.5cmPacking quantity: 96pcsGross weight: 13.5kg(2) Sleep meter function:1. 10 pieces of sleep music: white noise, Lullaby 1, cricket call, wave sound, clock sound, bird call, heartbeat sound, Lullaby 2, running water sound, Lullaby 3Product list:1 * host1*usb1 * English manual1 * Lanyard1 * color box