The doTERRA Bubble is a compact diffuser that is activated by motion, and is designed to remain dormant until it detects movement. With an infrared motion sensor that has a range of 13 feet and a 120-degree field of view, it can quietly diffuse your favorite doTERRA essential oil or blend into the air whenever someone enters the room. This mini diffuser does not require water, and has two mist modes - normal and high - so you can choose the level of aroma that suits your preferences. It can use both 5 mL and 15 mL doTERRA essential oil bottles, and can fill a 110 square foot room. The Bubble is an economical option that runs for up to 12 hours, and has an indicator light that flashes when it needs to be recharged with the provided USB cable. The discreet size of the Bubble means that it can fit into any space, adding a personal touch to any room in your home. Please refer to the diffuser manual and product label for instructions and precautions. The dimensions of the Bubble are 46 x 46 x 75.5mm (1.82 x 1.82 x 2.98 in), and it is made of PP material. The suggested room size for this diffuser is 10 sq m (110 sq ft), It requires a power source of DC 5V 1A and 3.7V 800mAh battery. The indicator light is blue for normal mode, and green for high mode, and the diffuser comes with a USB cable.