USB Rechargeable Mini Household Humidifier Product material:ABS/PP/Silicone/Hardware/Electronic parts Product size:9.65*9.65*17.75 cm 1.Add water before using it .Do not use the humidifying function when lacking water. 2.Do not add any essential oil or perfume to avoid blocking of atomizing plece function. 3.This product is designed with water-lacking protection.When lack of water the humidifier will automatically stop mist spray.To continue working，please add water to the maximum water level of water tank and press the button restarting. 4.When cleaning the rpoduct，don't wash directly under the tap to avoid short-circuit.Suggest to clean by using a soft cloth. 5.Please charge the product by 2 hours before first using.Suggest a charging every 3months if stored, to avoid damage of the battery.This product is not suitable for single using of children under age 6.