1. Using a 64mm super large brushless motor, the thrust can reach up to 1kg 2. Built-in super large-capacity 21700 type battery, long-lasting battery life 3. Ultra-high power efficiency ratio, 400 watt power consumption, long battery life, low heat generation 4. Support overcharge protection, battery LED indicator and other functions 5. Supports infinite speed adjustment, can be applied to different application scenarios at any time, and is very convenient to use. Suitable for cleaning, daily dust removal, car drying, carbon stove fire lighting, etc. parameter: Model: T9V2 Motor: 64mm diameter high-performance brushless motor Thrust: 1kg max Battery: 6 4000mah 21700 type batteries Battery life: 25 minutes max Power: 400W Charging: Type-c interface, QC3.0 protocol (15W fast charging) Weight: 620g Precautions: 1. This product is a high-power product, and slight heating is normal. Please avoid running for a long time at a time, as overheating may cause the motor to burn out. 2. Do not allow foreign matter to be caught in the tail of the fan; do not allow children to come into contact with this product. 3. Please charge it in a ventilated place. Due to different batches, the appearance, color and printed words of the product , which will not affect the use. Colour:Black Material:plastic+metal Package Contents: 1 x Violent Fan Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.