All student from our college gathered and planed to visit a science exhibition. We reached the science exhibition place and saw that there are so many counters to help the visitors. Now we went to see actual arrangement there so many groups with there projects. All are with different technologies. Some on Bluetooth, some on WI-FI, some on micro controller, some on ARM etc. They showed their talents in it. We stopped at a counter where students have project on Bluetooth technology. He grated us and we asked him to tell about his project. He explained it very nicely. He included each every point like why Bluetooth is advance technology how its working, different bands for it, comparison with other technologies etc. He told us that in Bluetooth the signal is changing 1600 times per second having 71 channels. Due to this it is most secure technology. The only disadvantage is it's distance limitations. We impressed very much with his presentation. We did same thing at different counters and good responses from them. Finally in evening we came to home. It was a good and learning day for us.