Create ultimate, fragrant, musical spa environment. Ultrasonic aromatherapy mist diffuser features wireless connection from any Bluetooth device up to 30 feet to enjoy your playlist or any source of internet music. The diffuser has a built-in sound system with mist and changing color. The AromaHarmony can mist up to 6 hours intermittently at 15-second intervals or 3 hours continuously. Optional rotating lights provide additional ambiance. Suggested Room Size: 150-200 sq ft. Automatic safety shut-off. UL approved AC adapter included. Essential oils sold separately.