Features: 1Perfect diffuser to bring you fragrance and good mood while study working or sleeping. 2Easy to install and replace the air fresher by yourselves. 3Adopts high quality ABS material erosion resistant and durable. 4User friendly design easy to operate by pressing the button. 53 working modes(24H/DAY/NIGHT) and 4 time settings(5minutes / 10minutes / 15minutes / 20minutes). Specification: Features: Perfect diffuser to bring you fragrance and good mood while study working or sleeping. Easy to install and replace the air fresher by yourselves. Adopts high quality ABS material erosion resistant and durable. User friendly design easy to operate by pressing the button. 3 working modes(24H/DAY/NIGHT) and 4 time settings(5minutes / 10minutes / 15minutes / 20minutes). With hanging hood at the back of the machine easy to place on the desk or hang on the wall no drilling or nails needed. Specification: Material: ABS Color: White Battery: 2*1.5V D size battery(Not included) Installment method: Desktop or Wall mounted (No drilling needed)Effective range: 30hours Time setting: Every 5minutes / 10minutes / 15minutes / 20minutes3 working (Spraying) modes: 24H: Every 5/10/15/20 minutes (Day&Night)DAY: Every 5/10/15/20 minutes (In the case of light)NIGHT: Every 5/10/15/20 minutes (In the case of no light) Size: Approx. 24*8.5*8cm / 9.45*3.35*3.15 inch Package list: 1 * Automatic Aroma Dispenser only (Air fresher not included) 1 * User manual 1 * Screw set Notice: Air fresher and battery are not included in the package. Make sure you don't mind that before making an order. Thank you! Please note that the new type and old type of this product will be sent randomly and make sure you will not mind before ordering.