Powered by battery 2 fan speed settings Product dimensions: 3.5 cm depth x 17 cm width x 26.5 cm height [For mask-related stuffiness] Hands-free design allows you to direct air to your mask, reducing the temperature of stuffy areas and making breathing easier. 2-level wind power. Three-dimensional, compact neckline that fits snugly around the neck. It doesn't slip and is stress-free to wear. You can bend the arms in any direction to adjust where the air is directed. It can also be used as a desktop fan. Quiet 5-blade design and a snowflake-patterned cover that prevents hair from getting caught and fingers from entering. Delivers air over a wide area.