Rechargeable large capacity battery - 2600mAh rechargeable 18650 lithium-ion battery provides 3 to 10 hours of working time, including battery. Extended usage time reduces the need for frequent recharging or battery replacement. The mini handheld fan is safe and efficient, ideal for summer use. Convenient USB charging - This USB desktop fan is compatible with all USB output devices. Using a USB charging cable, it can be charged via 5V output adapters, USB chargers, laptops, power banks, and other USB-enabled devices. Portable design allows it to be carried in a bag for on-the-go use. 3 adjustable settings - Multi-function fan with low, medium, and high speed levels. Press the power button repeatedly to adjust the desired fan speed. Helps provide quick cooling relief from heat. Suitable for home, office, school, travel, gym, outdoor activities, camping, and baby’s sleep environment. Portable design and low noise - Compact and portable. Innovatively designed fan blades simulate natural wind, delivering a comfortable and cooling breeze. Equipped with a high-quality brushless motor that operates at high speed with minimal noise, ensuring a quiet environment for study, work, and sleep. Hand-held fan with base - Features a removable non-slip base for use as a desktop fan, ideal for use on a desk during study or work. Can also be held by hand. Streamlined handle provides comfortable grip. Material: Plastic Full run time: 8 hours Battery capacity: 2500mAh Head oscillation support: No