1. For the first time, press and hold the power on to display ON, and then the screen will be in standby state (the will after power on) 2. Double-click the switch to switch the battery 3. Click the button to switch gears, the default gear is 1 when power on, press again to change to gear 2, and so on, the highest gear is gear 5 4. Shutdown: Press and hold the power button again to display 0FF as shutdown. Note:This product does not contain oils. You need to buy oils by yourself. Instructions: Functional operation steps: 1. Press and hold the switch for the first time to display on, and then the screen will be in standby state (the will after the power is turned on) 2. Double-click the power button to switch the power 3. Gear analysis, the default gear is 1 when power on, press again to switch to gear 2, the screen displays number 2, press again to switch gear 3, the screen displays number 3, and so on, the highest gear is 5. 4. Shut down: Press and hold the power button again, the screen will display OFF as shutdown Indicator light description When charging this product, the screen is always on, the charging is on, and the power is increased by 0-100%. 5 is displayed as . The displayed on the screen lights up 5 seconds after the machine is turned on. Colour:black :ABS Package Contents: 1 x Diffuser 1 x USB cable 1 Set x installation accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.