Using the latest ultrasonic technology, you can protect the whole family at home or even when on the go. Capable of holding up to 350ml of water mixed with AIR-SHIELD 100% natural organic blend oil. You can rely on this fully portable device to shield you wherever you are. Taking just couple of hours to fully charge using the USB cable provided you can use it all day plugged in or for up to 8 hours for portable protection. Furthermore, it is silent, leak free and has a built in multi colour night light if required.