Both technologies transmit using radio waves at the 2.4 GHz frequency (as does the -cordless phone in your house). The main difference between the two: bandwidth. Bandwidth is a measure of how many bits of data per second can be streamed through a connection or network, McGowan says. The lower-power Bluetooth can send only 800,000 bits per second; Wi-Fi can send more than 11 million bits in that same time. Wi-Fi’s typical range is about 300 to 400 feet, though the signal can be boosted with sensitive, directional antennas.