1. Features: The wireless handheld fan is small, delicate, compact, lightweight, and easy to carry. It has better and more extensive usage effects and can also be used in small spaces. This fan has a simple design, a reasonable structure, and powerful performance. It is made of ABS and silicone, which is fireproof, heat-resistant, wear-resistant, and has a long service life. 2. The fan is driven by a high-power brushless DC high-speed motor, with a maximum output speed of up to 130,000 RPM, which can generate a strong wind speed of up to 52 meters per second and will not burn out after long-term use. It has 3 adjustable speed gears, and you can adjust them according to your usage needs. The operation is simple and convenient, greatly improving your cleaning efficiency. 3. [Built-in battery] It has a built-in battery (single battery capacity: 4000mAh). The theoretical battery life (in the first gear) is up to 4 hours, with longer durability. It is suitable for blowing carbon, industrial dust blowing, ash cleaning, keyboard cleaning, car and motorcycle cleaning, car console cleaning, car gap cleaning, foot mat debris cleaning, picnic garbage cleaning, etc. 4. Specification: Project type: Blower. Material: Plastic + Metal. Battery: 4000 mAh battery (included). Charging interface: USB. Charging time: 2.5h. Voltage: 6 - 8.4V. Wind speed: 52 meters per second, 130,000 revolutions per minute, and the wind can reach level 16 (56 meters per second). Motor: High-speed brushless motor. Package includes: 1 x Blower, 1 x USB cable, 1 x Manual.