Smart portable fan powered by a long-lasting lithium battery. Rechargeable wireless cooling fan. Fan Specifications and Features: Fan Size: 8 inches Power Source: Rechargeable Lithium-ion batteries. Number of included batteries: Two. Battery Capacity: 6000 mAh. Battery Voltage: 48V. Power: Approximately 60W as indicated on the cooling device's box. Speed Settings: Two speeds. Airflow Type: Adjustable personal airflow. Motor Type: Powerful high-performance motor. Noise Level: Low noise operation. Air Circulation Function: Yes. Charging Type: Dedicated DC charger. Charging Time: Approximately 3-4 hours. Usage Time: Approximately 1-2 hours. Charger Input: AC 100-240V 50/60Hz. Suitable for: Home, Bedroom, Kitchen, Guest Room, Camping, Garden, Travel, Office, Workshop, and Outdoor Use. The key features of this rechargeable wireless fan include two removable lithium-ion batteries, providing you with convenient portable cooling during camping, travel, and daily use.