Features: Side lower vent holeAnnular exhaust, side lower vent hole. The top around the small hole suction harmful substances, through the composite filter screen filter, more fresh.USB charging: Working voltage 3.7V/500MAH strong endurance. Air purifierNot just an ashtray, but an air purifier. It can not only store soot but also absorb second-hand smoke. Fashion ashtrays, with incense flakes.It is suitable for a variety of scenes. It is suitable for a variety of scenes, such as home, car, office and business environment. Built-in filter elementDetachable, clean in one flush. Built-in multi-layer efficient filter element, with large air volume fan, quickly capture harmful substances in the air, multi-channel isolation layer layer by layer filter pollutants adsorption purification smoke smell. Filter more fineFilter more fine, replaceable filter net. Built-in efficient activated carbon filter cotton, with large air volume fan, quickly capture harmful substances in the air, efficient activated carbon layer can effectively adsorb pollutants and purify smoke smell. Large capacity batteryLarge capacity battery, strong and lasting purification needs to install 3 No.5 batteries inside the body, USB charging farewell to the cable troubles, strong and lasting purification of a charge of about 4 hours and 5 minutes can be used for 40+ times. Smart sensingSmart sensing, tap the edge to start purifying. Touch the ashtray around, knock off the ash while the intelligent induction knock edge to purify the motor starts to work. Specifications: Material: plastic + electronic components Color: dark green, white Size(about): 139x100mm/5.47x3.94inch(WxH) Charging time :4 hours USB charging: Working voltage 3.7V/500MAH strong endurance Package Included: 1pc x Smokeless ashtray 1pc x Charging cable 6pcs x Cotton filter 6pcs x Aroma Diffuser Note: 1. Due to the light and screen difference, the items color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.