USB 1800mAh Portable Summer Air Cooling Hanging Neck Fan Bladeless Mute Sports Personal Wearable Neckband Fans for Kids Children Feature: Food-grade silicone material, soft and elastic, safe and odorless, and the angle can be adjusted arbitrarily. Double-sided turbo blower design, 72 blades hurricane performance, reduce air vibration. Three gears of wind: 1st gear, suitable for reading and studying. 2nd gear, go to school, leave school. 3rd gear, beach, play in the sun. Both sides of the fan are designed with brushless motors, which are energy-saving and quiet, operate efficiently, reduce battery power consumption by 30%, and last longer. Specification: Name: Leafless hanging neck fan 1. Size: 191x178x62mm/7.52x7.01x2.44in 2. Battery: 1800mAh (2pcs*900mAh) 3. Weight: 345g 4. Output power: 7.5W 5. Input current: DV 5V/1A 6. Battery voltage: 3.7V 7. Charging time: about 3 hours 8. Use time: 4-8 hours 9. Working temperature: 0-40deg; C Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. 1* hanging neck fan 1*USB cable 1*Instruction