Features: 1. Lightweight & Thin Body: Hands-free cooling fan, strong airflow. You can hang the fan around your neck and carry it with you. No sense of restraint, easy to carry and free hands. This is a must for summer. 2. Adjustable Wind Speed: 3-gear wind speed, allows you to choose the best wind speed and create powerful wind for yourself simply and easily. Mute and cool, suitable for any occassions, even in library. 3. Large-capacity Battery: Equipped with 2000mah batteries, 4.5 hours to full charge and last for 2-7 hours. Do not need to worry about not having enough electricity outdoors. 4. High-quality Material: The part that touches the neck is made of selected silicone material, which is soft and elastic and not easily deformed. 5. Small & With Stand: Easy to carry, no matter if you are on a business trip or out, you can carry it with you without taking up space. With Stand design, you can place it on the desk. Notice: Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. Description: Material: ABS+PP+ electronic components Size: about 8.3x3x12.5CM Power parameters: 4W Battery capacity: 2000mAH 18650 battery Working voltage/current: DC 5V/1000mA Net weight: 163g Charging time: 4.5H Use time: first gear 7H, second gear 4H, third gear 2.5H