This product is suitable for 10ml bottled essential oils.For the first use, remove the 'dust cover' and turn the diffuser over and insert the essential oil bottleHow to use: Turn the diffuser over and insert the essential oil bottle, turn clockwise to tightem, and counterclockwise to loosen the bottle. (Note: When installing essential oil, please do not remove the throttle valve.)Rotate the diffuser vertically, long press the switch button for 2 seconds to start/stop the diffuser, short press to switch gears. The first long press (yellow light): the diffuser works for 2 seconds and then works for 2seconds each time it sense motion. Press the second time (green light) light fragrance mode: work for 2 seconds, with an interval of 10 minutes.Press the third time (blue light) fragrance mode: work for 2 seconds with and internal of 5 minutes. Press the fourth time (white light) for a strong fragrance: work for 2 seconds with an interval of 1 minute. The indicator light is on during charging (red light) and turns off when fully charged. Long press for 2s to power off. Sensing range: 3 meters / 120degreesApplicable area: 50-80m2Dimensions: 84,6mm x 74,2mm