1ANTI DRY FUNCTION: Automatically shuts off after 5 minutes to prevent the device from burning out, effectively reducing the danger of damage. 2EMERGENCY POWER BANK FUNCTION: In addition to providing facial moisturization and humidifying the air, the mist sprayer also comes with a built in mobile power bank function. The built in lithium battery ensures worry free power supply while on the go. 3WIDE SPRAY, FINE WATER PARTICLES: The facial humidifier produces a large mist of fine water particles, ensuring that your skin stays moisturized without smudging your makeup. 4INSTANT HYDRATION: The nanotechnology used in this water replenishing device ensures that water molecules are quickly absorbed by the skin, providing instant hydration and revitalizing your complexion. 5COMPACT AND PORTABLE: The compact size of the mist sprayer makes it convenient to carry around, allowing you to enjoy instant hydration anytime, anywhere.