NO SPACE LIMIT - Dual rechargeable battery with battery capacity 1500mAh*2, wireless design so that you can move it to any place in your room, provides ideal coverage for your living roon, bedrooms, offices and any other places you want. ULTRASONIC COOL MIST TECHNOLOGY - Ultrasonic technology provides large amount of mist for humidification - 50ml/hour. And 1 litre water tank design can safely moisturize the air for up to 14 hours of continuous operation so you can breathe easy and get more restful sleep. DIGITAL DISPLAY & MAXIMUM WATER LEVEL LINE - The digital display shows clearly the remaining battery capacity to monitor battery state and the water level observation hole to help knowing the maximum amount of water at a glance. OPTIONAL NIGHT LIGHT & AUTOMATIC SHUT-OFF: The humidifier Offers soothing glow for maximum relaxation at night and it will automatically turn off after 9 hours for safety giving you and your family a great sense of security even in the gently night. EASY TO REFILL AND CLEAN - You can choose to add water directly from top, or you can also choose to rotate the water tank to open it and add water which is very convenient to refill and clean. Enjoy a comfortable and convenient life with this air humidifiers