Filter built-in and auto on/off An anti-bacterial filter is built in so clean oxygen is always supplied. Through the function of auto setting, it automatically becomes off in 30 minutes after it gets operated. Very simple operation It is operated with the on/off button that has employed blue LED, so it is easy to use. Available for home and cars 12V cigar jack, a headset, and a bag are supplied so it is effective for preventing sleepiness that can be caused by lack of oxygen when driving long. Anion and phytoncide (option) The function of phytoncide emission, which has the effects of air vitamin anion (ozoneless), anti-bacterial deodorization, dissolution of harmful materials, lessening stress, and improving concentration, can be added.