Features: 1. Small size: The diameter of the hanging neck fan is only 66mm, which is easy to carry and use. 2. Powerful function: It has streamlined fan blades to reduce noise, reduce wind resistance and increase air supply area. 3. Applicable occasions: This fan is an ideal choice for family, car, office, desktop, camping or traveling. 4. USB charging: The fan is powered by USB, compatible with PC/laptop, mobile power, AC adapter, car charger and other USB supported power sources. 5. 45 ° rotation: This fan can not only be hung on the neck, but also fixed on the waist, supporting 45° rotation, which is convenient and comfortable. Description: The USB fan can save energy and protect the environment, with three wind speeds, which can bring you cool in summer. Specifications: Material: ABS, PP Battery voltage: 3.7V Battery capacity: 1000mah Input voltage/current: DC5V/1000mah Output power: 3.5W Size: Upper diameter: 66mm, lower diameter: 60mm, height: 70mm Package Included: 1* Fan 1* Packing Box 1* Manual 1* Lanyard 1* Type-C Data Cable Notes: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.