Class 3

Bluetooth Class 3 represents the lowest power class among the three Bluetooth classes. With a maximum power output of just 1 mW (0 dBm), it has the shortest range, typically up to about 1 metre. It is primarily designed for short-range, personal area network devices, such as smartwatches, fitness trackers, or other wearable technology. This class does not require a significant power supply, making it ideal for battery-powered devices. Despite its limited range, Class 3 Bluetooth provides a reliable and secure connection, ensuring data integrity and security, although Class 3 devices remain uncommon due to their extremely limited range.