Becmella wearable neck band fan is a ultra -light, rechargeable products. It blows cool air silently and makes you feel cool by using the battery to drive the blade-less 360 degree air blower. The product is designed with 78 air inlet, which allows even cooling on face and protects hair's safety while using. There are 3 speeds available for users to choose. Becmella wearable neck fan also has built-in 4000mAh high capacity power bank which can be recharge through USB power cable, it will provide longer standby time (4-16 hours) after fully charged and keep charging your cell phone.