How many files did Delong 18 stir?

Delong has four gears for 8 years. They are: DysonV7 agitator, DysonV8 series agitator, DysonCycloneV 10 agitator and DysonSupersonic hair dryer. Details are as follows:

1, DysonV7 agitator: This model can speed up to 3 gears.

2.DysonV8 series agitator: This series of products can speed up to 4 gears.

3.DysonCycloneV 10 agitator: This model has adjustable rotating speed, up to 3 gears.

4.DysonSupersonic hair dryer: This * * * has four gears, including a cold air gear and three hot air gears, and the hot air gear can be adjusted to different temperatures of 60℃, 75℃ and 100℃ respectively.