Features: 1.All round: more than 5 million negative ions are released around, which is more scientific and more average in distribution. Negative ions are distributed along the wall, forming a full surrounded negative ion surround. 2.Power saving: smart a chip power saving scheme, durable. 3.More reasonable space purification mode: 40 seconds a light breath, more scientific increase and decrease in the amount of release. 4.Easy to use: one button switch, eliminating the cumbersome dialing and inserting. Plug and play, ease of mind. It is exquisite and small, and does not block other rows. 5.Widely applicable: it can be used in bedroom, living room, kitchen, toilet, study room, office, etc. Description: 1.Full angle surround ventilation system, breathing forest flavor. 2.Zero decibel low power consumption, ecological purification, safety and ease, power saving chip.