One of the major limitations of Bluetooth, as great and convenient as the technology is, is its range. Now, depending on the class, it can have varying ranges but for the most part, you are typically going to see a range of around 30 to 50 feet. This means that the two devices can’t be any farther than this range and if they are, the communication will begin to distort. You will notice as your watch will not respond as well when using the smart features.