The doTERRA Bubble is a small, motion-activated diffuser designed to hibernate until it detects the presence of movement. Its infrared motion sensor has a 13-foot range, a 120-degree field of view, and stands inconspicuously ready to release your favorite oil or blend into the air whenever someone enters the room. Simple to set up, this powerful mini operates without water and in two mist modes, normal and high, so you can create the perfect aroma ambiance. The Bubble uses 5 mL and 15 mL doTERRA essential oil bottles and can fill a 110 square foot room. This economical diffuser runs up to 12 hours and an indicator light flashes when it's time for the Bubble to be recharged with the provided USB Cable. Lightly used. Great condition. Item #: 60218199 PRODUCT FEATURES • Dimensions: 1.82 x 1.82 x 2.98 in • Suggested Room Size: 110 sq ft • Motion Sensor Range: 13 feet, 120-degree field of view