Since its invention by Ericsson in 1994, ブルートゥース has transformed the way devices communicate wirelessly. Early versions like ブルートゥース 1.0 and 1.1 introduced basic wireless connectivity, while ブルートゥース 2.0 + EDR enabled faster data rates and better audio transmission. With ブルートゥース 3.0 + HS, high-speed data became possible, and ブルートゥース 4.0 marked the arrival of Bluetooth Low Energy (BLE) for power-sensitive IoT devices.

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The milestone came with ブルートゥース 5.0, which doubled the speed, extended the range up to 300 メートル, and increased broadcast capacity eightfold. Later versions such as ブルートゥース 5.1 and 5.2 added precise location features and enhanced audio support through ザ・オーディオ.

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Modern Bluetooth radio modules are built on these advancements, supporting both Classic Bluetooth (for audio streaming and voice) and BLE (for low-energy IoT applications). Their evolution ensures broader compatibility, stronger performance, and more diverse use cases across industries.