Hamilton Beach 04255 can improve the quality of air in your home or office. It is a simple to use device that can be placed up to six feet away from the source of strong odors. It features a simple design, easy to clean and replace filter and a user friendly one-button interface that turns the device on and off. According to the manual, the filter should be replaced every 2 to 4 months, so it is recommended to stock up on supplies. The device must be plugged into a wall outlet to operate, and it does not come with an option to use batteries.