【Super Strong Endurance Battery】The camping fan built-in a 5200mAh battery, which can work continuously for 5-24 hours depending on different speeds, but it only takes 2 hours to fully charge. It can be charged by a USB charger, laptop, car charger, etc. In addition, the tent fan has a USB-A port, which means it can be used as an emergency backup power source for your phone or other devices. 【3 Brightness & 3 Speed Settings】This USB camping fan is available with 3 wind speed levels (Low / Medium / High) to meet your different cooling needs. The LED lights with 3 adjustable brightness levels can illuminate your outdoor activities at night. It is an ideal light source for camping or hiking at night. 【Remote Control & Timer Function】The tent fan is equipped with an infrared remote, you can use it to adjust wind speed gear, LED light levels and timer easily. No need to stand up or stretch out your arms to adjust the fan anymore. The timer provides you with three modes for options. You can set a two-hour, three-hour, or five-hour timer. 【Hanging Hook & Detachable Design】The portable fan is equipped with a hanging hook on the top that allows you to hang it on tents, tree branches, dormitories or anywhere you want. Designed with removable fan blades. Easy removal by simply turning the fan blades clockwise. The smart design makes it easy to carry and store for you. 【Quiet but Powerful Wind】Our product adopts the lastest brushless motor technology and high-performance ultra-thin fan blades, which can provide you with ultra-strong airflow at the lowest noise, maintaining air circulation in the tent. It will not affect your sleep or do anything.