Improve the quality of the air around you in minutes with the Portable H 2 O Fresh Air Humidifier. This portable air humidifier features ultrasonic technology , making it extremely quiet and perfect to use anywhere at any time, safety shutdown preventing the device from dry boiling/burning in case of low water level, a rechargeable intern battery that can last up to 7 hours (once fully charged), what allows you to take it everywhere easily, and soft night lights to help you set that relaxing feeling before bed and self-care moment. For having a portable size, the H2O Fresh Air Humidifier is the best humidifier to take with you on trips, office hours, car commute, while studying or staying at home. It will help you improve the air around you, keeping your skin moisturised in a natural way and reducing skin breakouts caused by weather change, relieve nasal congestion and discomfort caused by dryness with this natural alternative therapy. Please check the manual for further instructions. Specifications Lighting: 7 night light colours to select Spray Modes: Continuous (approx. 5 hours battery) and periodical ( approx. 7 hours battery). Material: ABS Battery Voltage: 3.7v Battery Capacity: 2000mAh Input Voltage: DC 5.0v Tank Capacity: 750ml Spray Amount: 30-50ml/h Dimensions: 3.8" x 3.8" x 7" Weight: 370g In the box: H2O Humidifier x 1 USB Charge Cable x 1 Cotton Filter x 1 Manual x 1