A device for accurately and flexibly delivering item-specific information from a voice server to a user and the method of using same is disclosed. The cover component includes an elastic member configured to exert force to the vicinity of the second side surface. The cover is placed at a front part of the temperature sensor. The blade includes a plurality of radial pistons deployed therein. The handheld device receives the update data if there is sufficient memory available. The bar graph is automatically displayed on the display means when the received signal strength is below the threshold.