Features: 1. Preset tire pressure, stop when fully inflated, safe &convenient. 2. Wide application, inflate bicycles/motorcycles/cars/balls. 3. LED screen digital display, clear function settings. 4. 5000mAh big capacity, long battery life. Attentions: 1.This product is not suitable for tires requiring high capacity/high air pressure. 2.Do not touch air tube/inflation port when the air pump is working. After it stops working, please wait for 3-5 mins then pull out air tube. 3.It is recommended to use the product for no more than 10 mins at a time. If there is any abnormal noise, please turn it off and cool down for 10 mins before using it.