Features:

1, all-round release of negative ions

2, a small space full of enough to filter the road above the dust with the exhaust gas

3, through the car out of the air outlet to shoot the air more stable and fast

4, safe mute, with a strong negative ion release function

5, the car is open to go, the car stopped off

6, full power state, an hour a day, can last 20 days

7, the use of car cigarette lighter port can be charged, convenient and quick