Features: 1. Use a 64mm brushless motor with a thrust of 1600g. 2. Compatible with for 18-21V batteries (batteries are not included in the shipping list). 3. Ergonomic design, comfortable feel 4. Push-type speed switch, can be used as needed Specifications: Motor: high-speed 64mm brushless motor Thrust: 1600g max Duration: 15 ~ 20 minutes, full power, continuous use. Power: maximum 1100W Precautions: 1. The thrust of the fan is affected by many factors, such as the discharge capacity of the battery, the battery power, the test tool, etc. 2. It is not recommended to use it for a long time. If you feel that the battery/fan is obviously hot, please stop using it in time to let the fan and battery dissipate heat in time 3. After the battery power , the speed drop significantly, which is normal Colour: Black Material: PETG carbon fiber note: Without batteries Package Contents: 1 x Turbo Jet 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.