Portable Cordless Vacuum:it can use for 70 minutes continuously when on a single charge 4-5 hours fully recharge. (5.9 x 6.1x2.6 inch,285G) mini size and enables you to take it anywhere you want to clean. | Rechargeable Vacuum: Recharged from any USB port or computer,when you turn it on, hold the button until it turns on, It takes 2 few seconds. | Powerful Suction&Low Noise : Built-in 3000mAh lithium battery, rated output power is 18W (larger power than other mini USB vacuum), Our portable keyboard cleaner have excellent seal so they convert more air into suction for optimum cleaning. it does not emit excessive noise during operation. There is no need to worry about disturbing your family while using it! | 2 Vacuum Nozzles : 2 Different vacuum nozzles allow you to reach the tightest spaces; Flat nozzle can inhale little pieces of paper while brush nozzle can dry ash and dust . | 100% Customer Satisfaction : We offer 1 year warranty from the purchase date. If there is anything that you are not satisfied with, We will refund or replace without any questions.welcome to send us email via We will reply within 24 hours.