Ultrasonic Scent Diffuser Machine: 1.Technology: Ultrasonic diffuser, no noise. 2.Installation: With hanging board easier to install on the wall, tabletop. 3.Power: 4 pcs AA batteries, or battery and electric. 4.Oil/battery life: long life, 1-2 months. 5.Control: Button with LCD screen + Bluetooth.

Ultrasonic Scent Diffuser Machine: 1.Technology: Ultrasonic diffuser, no noise. 2.Installation: With hanging board easier to install on the wall, tabletop. 3.Power: 4 pcs AA batteries, or battery and electric. 4. Memory record: With memory battery inside, save setting record. 5. Oil/battery life: long life, 1-2 months. 6. Anti-theft design: There are holes and screws on the machine to prevent theft. 7. Control: Button with LCD screen + Bluetooth.