5-Speed Ultra-high Wind: Simply press the power button of hand held fan to adjust the wind speed settings. A short press will toggle the speeds from the lowest (4m/s; 6000r/m) to the highest (7m/s; 10000r/m). This allows you to easily customize the wind speed to meet the varying wind force requirements of different situations, ensuring you can confidently enjoy coolness both in the office and during outdoor travels. Digital Display - Wind Speed & Battery Power Reminder: This portable fan is equipped with a high-definition digital display that can show the current wind speed and remaining battery power. Therefore, you can plan your charging schedule for your travel fan before traveling. Ensure that you have a cool companion for every trip. 4000 mAh High-capacity Battery: The high speed handheld fan rechargeable equipped with a 4000 mAh battery, make this portable fan supports up to 3-12 hours of usage (depending on different speed settings). Our handheld fan is committed to improving battery life, allowing us to confidently enjoy a full day of coolness for up to 12 hours (at Speed 1 - 6000 RPM). Portable Mini Fan: It measures only 60*58*162mm and weighs just 0.4 pounds, making it easy to slip into your pocket or bag. The handheld fan comes with a lanyard to prevent it from getting lost, so you can take it with you wherever you go during travels or outdoor activities. Private Travel Essentials: Handheld and desktop fans will become essential items for indoor activities such as makeup and reading, as well as for outdoor commuting and camping. With USB charging and a rechargeable battery, the fan is compatible with standard USB ports, laptops, portable power banks, and car chargers, etc., providing a convenient solution for power needs anytime, anywhere.