Super long working timeHand-held fan, long-lasting battery life and rechargeable, 4000mAh large-capacity battery, can work continuously for 4-18 hours (depending on the gear), and it only takes 1.5 hours to fully chargePortable & Multiple Ways of UseHand-held small fan, you can hold it in your hand, or put it on the table, or hang it around your neck with the provided rope, the foldable design is convenient for you to carry while travelingEasy to useHand-held fan can be folded, adjust the air volume with one key, digital display of gear position and remaining power, can be used as a mobile power supply for emergency charging of mobile phones, notebooks and other mobile devicesSummer AssistantPortable hand-held fan, very suitable for use at home, office, travel, shopping, camping, easy to carry.Ultra-quiet & 6-speed adjustableThe hand-held fan is rechargeable, the noise is <15db, ultra-quiet, the 6-speed is adjustable, the wind speed is gradually increased from 1 to 5, and the 6-speed simulates natural wind, and automatically adjusts the wind speed to meet various usage scenarios. stay cool anywhere