Which class of Bluetooth is most commonly used?

The most commonly used class of Bluetooth is Class 2, which has a range of up to 10 meters. This class strikes a balance between adequate range and power consumption, making it ideal for personal devices like smartphones, tablets, and accessories such as wireless headphones and keyboards. Class 2 Bluetooth is widely adopted due to its suitability for close-range communication and its ability to reduce energy consumption, which is crucial for battery-powered devices.

In contrast, Class 1 is typically utilized in situations requiring a longer range, but its power consumption is much higher, making it less favorable for everyday consumer electronics. Class 3 and Class 4 have even shorter ranges and are less common in mainstream devices. Thus, Class 2 is the most practical and efficient choice for the majority of Bluetooth-enabled devices used in various applications today.