Using a high-gain antenna connected to a Class 1 Bluetooth adapter kit from Bluedriving.com, three men set out to see if they could connect to a Class 3 cell phone and attempt to transfer a file over the air at an extreme range of 1 kilometer or about about 3,300 feet. The test was conducted placing a laptop at the highest accessible point in the region and a cellphone located within visual line of sight. They were able to copy three files from a Sony-Ericsson T610 during the test at the targeted range of 1 kilometer, when a bluetooth cell phone device was not thought to have enough power to travel distances greater than a few dozen feet. Full details of the experiment, which they claim is a new world record, can be found at Wi-Fi Toys.