model: bjm299 product name: healthy optical mouse features: 1. latest optical technology with 800 dpi ergonomic comfort and ease of use technology attractive streamline shape & advanced built-in buttons makes bjm-299 a fancy partner the to your computing life. 2. built-in air ionizer/ozonizer offer purify air - improves air quality in your working environment . germ restraining & germ killing -the ozone can kill most of germ in the air. de-stink (decomposing organic gas) -- ozone may first destroy the energy key of organic gas and turn it into single gas molecule.¡¡ non -poisonous according to the health principle between anion,ozone and people, we design the automatic circular control system to provide one minute ozone generation and 7 minutes anion generation. for more information about this innovative healthy product, please feel free to contact us. address: 4/f,building 11, new tongfuyu industry park, longhua village, longhua town shenzhenguangdong zip:518109 tel: 86-755-61123680 contact: bill woo homepage: http://www.bnjep.com