Stay cool and comfortable wherever you go with the Sparkle Rechargeable Desk Fan! This compact and powerful 6-inch fan is your perfect companion for home, travel, or those unexpected power outages. Technical Specification Size: 150mm (6") Rated Power: 7W Rated Voltage: 5V DC Rated Speed: 2,200 RPM Air Delivery: 5 m3/min Service Value: 5 m³/min/Watt Charging Time: 3.5 hrs Backup Time: 2-4.5 hrs Charging Port: Type-C Battery Size: Li-Ion 1800mAh, 3.7V Motor Type: BLDC Warranty: 3 Month Warranty.