5200mAh Capacity Battery Builtin 5200mAh rechargeable battery for longlasting cooling, delivering 836 hours of continuous use depending on settings. Works while charging, with no heat generation during operation, making it safe for children. USB charging lets you power from a power bank, laptop, or car USB port. Quiet but Powerful Wind Advanced brushless motor technology paired with ultrathin fan blades for strong airflow. Delivers performance at a low noise level of less than 36 dB. Keeps tent air circulating without disturbing sleep. Super Bright LED Camping Lantern Three brightness levels: low for soft, nonglaring light; for bright illumination that can light up the entire tent. Hook design allows easy hanging from the of a tent, saving space and keeping light overhead. A reliable light source for camping or hiking at night. Professional Camping Gear: Compact and Practical Small, lightweight, and easy to pack in a backpack. USB charging compatibility with power banks, laptops, or car power supplies. Supports 2A fast charging and fully charges in 6 hours. An ideal companion for camping, fishing, and hiking. Usage scenarios Tent camping at night: use the fan for cooling and the lantern for lighting, without the need for multiple devices. Outdoor trips in the evenings: hang the lantern from the tent, while the fan maintains air flow inside the shelter. Emergency or travel backup: USBrechargeable power source readiness ensures you have light and ventilation on demand.