Temperature-controlled warm air:The product delivers warm air into the ear cavity to gently and effectively dry the ear canal and evaporate excess moisture.This feature provides a safe and efficient means to dry the ears after swimming, showering, surfing, or any othe rwater-related activity.The temperature of the air is controlled to ensure safety to the user. 650nm red light therapy:Red light therapy is a safe,non-invasive treatment that has been shown to promote skin health Colour: A black grey / B silver Material:ABS Instructions 1. Remove dust cover from the earpiece, rotate the rotating head 90°. 2. Long press the power/wind speed button until the device starts up (about 1.5 seconds), and the wind speed will be displayed as 1 gear, and the temperature gear will be displayed as "CO" (cold wi nd gear).Continue to press the power/wind speed button, and the wind speed will be displayed as 2 gear. 3.Tap the power button to toggle the 650nm red light ON and OFF. 4. Gently press the temperature button, the display temperature is 38 C (wait for about 10 seconds) then gently press the temperature button, the display temperature is 42 C, and so on. the third grade temperature cycle (CO, 38C, 42C). 5. Gently insert the earpiece into the ear and hold steadily so air flows freely into the ear cavity.We recommend drying intervals of 1or 2 minute perear. 6. When you have finished drying your ears, press and hold the power button until the device turns off. 7. We suggest cleaning the earpiece after each use by wiping down with clean cloth or alcohol wipe. 8. Re-attach the dust cover for storage. Package Contents: 1 * ear dryer 1 * charging cable 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.