Can install the base fixed in the position,and then the light bar will be automatically adsorbed in the base above Using the USB charging port gives you great flexibility of use. enjoy its brightness while charging in emergencies Its built-in 1800 mAh high-performance battery has excellent endurance Its smooth lines outline a stylish silhouette, showing the beauty of simplicity. Can provide you with even, soft and bright light when you are grooming, so that every detail of your face is clearly visible