This Diffuser/Humidifer is also equipped with an LED Light so can serve as a gentle night light. Using this extremely quiet unit, you will be able to create an instant relaxing aromatherapy environment for yourself at any time – and at the fraction of the cost of a single spa visit. Timer is equipped with 30/60/120/180 minute options. 5V power supply | holds 2.36 oz | 3MHZ frequency | can cover up to a 10 meter space. Comes with 1 Ultrasonic Aromatherapy Diffuser, 1 USB Cable, and 1 User Manual.