Smart portable fan with a long-lasting lithium battery. Rechargeable wireless cooling fan. Fan Specifications and Features: Fan Size: 8 inches Fan Dimensions: 20 × 12 × 25 cm. Outer Box Dimensions: 23 × 14 × 5.27 cm. Power Source: Rechargeable Lithium-ion Batteries Number of Batteries Included: 2 batteries Battery Capacity: 6000 mAh Battery Voltage: 48V Power: Approximately 60W as shown on the cooling device carton. 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 lounge, 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.