DualPurpose--Not only a powerful cordless vacuum cleaner, but also a cleaner blower.One side of the clener is to absorb dust and the other side to blow away dust,helpful for clean sofa seams,corners of stairs,car gaps and other hard-to-reach places. Rechargeable & Long Lasting Battey--Built-in rechargeable 2000mAh high capacity lithium-ion batteries which makes working time up to 50 minutes.The mini size and lightweight makes it convenient carrying to clean keyboard, computer,laptop,cars,office desk,pet hair,dog hair,cat hair,pet house,crumbs,scraps,etc. USB Safe & Fast Charging--It only takes 3-4h to be fully charged,quicker recharge and no memory effect.USB DC5V charging port design to ensure safety of the equipment during charging.Multiple protections: short circuit protection,temperature protection,input voltage protection and input current protection.