Specification: Item Type: Beauty Mask Material: ABS Color: White Light Color: Three Colors Rated Power: 9W Working Time: 20 Minutes Input Voltage: 5V 1A Package Weight: Approx. 620g Package List: 1 * Main Device 1 * USB Control Line 1 * User Manual in Chinese & English Instructions: 1. After cleansing, dry the face and adjust the belt to proper tightness. 2. Connect the USB interface or power bank(5V 1A or above current output). 3. Apply the mask to your face(previously use facial serum or mask for better effects), up to 10-20 minutes per application per day. Operating Instructions: Power Button/Vibration Switch: 1. Power button long press for 1 second to start, fully open(40℃ constant temperature heating, multi-frequency vibration, phototherapy). 2. Power button long press for 1 second again to shut down. 3. Power button short press once, vibration function on/off. Time Button/Light Switch: 1. Time button short press once to switch working time, 15 minutes, 20 minutes and 30 minutes. 2. Time button long press for 1 second to switch the light color. The color order is red, yellow, blue, light off, and the cycle is in turn.