Select one of 4 relaxing musical tones and set your desired volume via included remote control. These tranquil songs are sure to create a relaxing environment in your home or yoga studio. Get the sleep you need with these soothing melodies. Make Lemonade Essential Oil Diffusers utilize Ultrasonic technology to ensure the purity of the oils maintain their integrity and provide a safer experience as no heat is used during operation. It is recommended to use ZIA Zensation 100% Pure Therapeutic Grade Essential Oils for best results and to prolong the life of your aroma diffuser.