1. Technology: Ultrasonic, no noise. 2. Installation: car. 3. Power: USB recharge 4. Oil: water-based essential oil. 5. Time set: 3 levels to choose. Work 3 times of spray 1.5 sec pause 1.5 sec, pause 5/10/15 minutes different. 6. Car mode： it has vibration sensor function. When car works it works, when car stop it stops. 7. 2 modes for choice: car mode or home mode.

1. Technology: Ultrasonic, no noise. 2. Installation: car. 3. Power: USB recharge 4. Oil: water-based essential oil. 5. Time set: 3 levels to choose. Work 3 times of spray 1.5 sec pause 1.5 sec, pause 5/10/15 minutes different. 6. Car mode： it has vibration sensor function. When car works it works, when car stop it stops. 7. 2 modes for choice: car mode or home mode.

1. Technology: Ultrasonic diffuser 2. Installation: Mini size and portable, wall-mounted. 3. Power: 4 pcs AA batteries 4. Spray: Straight blowing style from front. 5. Oil: water-based oil, liquid disinfectant 6. Oil/battery life: A 150ml bottle esential oil can spray 2000 times, 4 pcs AA batteries can be sprayed about 8000 times. 7. Work time: 5 working periods 24 hours,its work interval is 1-10 gear, each gear 0.5 seconds, pause 3-60 minutes by your option.