Comparison XO BE44 vs XO BE20

A device designed to fix the device on the auricle; most often represents a signature shackle. Such a shackle is very popular among Bluetooth headsets — this is the easiest way to hold a relatively large device on your ear. At the same time, ultra-compact models can be fixed directly in the ear and do not need a behind-the-ear hook. And for car kits and speakerphones (see "Device"), such a mount is not required.

Note that the shackle is most often made swivel, which allows you to reposition it from the left to the right ear and vice versa.

— Mini-Jack (3.5 mm). The Mini-Jack is one of the most popular wired connectors. However, it is not used in Bluetooth headsets and is rarely found in other specialized accessories, primarily serving an auxiliary function. In speakerphones, the mini-Jack typically connects multiple devices, and in car kits, it outputs sound to the car's radio or standard audio system. Note that the headphone jack in this case is not considered a 3.5 mm connector, although it is most often made in this format.

— USB-A. The classic USB-A computer connector is gradually being replaced by the USB-C connector. The purpose and use of such a connection depend on the type of device. For example, USB in speakerphones is the standard connector for wired connections to both computers and specialized communication systems. In Bluetooth headsets, this means it is equipped with a USB adapter for connecting to PCs without a Bluetooth module.

— USB-C. A port similar in purpose to the one described above, but with a more modern symmetrical design that doesn't require correct orientation, and consequently allows for higher speeds.

— Bluetooth. Nowadays, Bluetooth is essentially the standard interface for wireless connectivity to gadgets like headsets and other audio accessories. This technology is well-suited for audio transmission but can also be used for additional functions su...ch as remote control. The capabilities depend on the version, with notable ones being Bluetooth v5.0, Bluetooth v5.1, Bluetooth v5.2, Bluetooth v5.3, Bluetooth v5.4, and Bluetooth v6.0. Generally, the newer the version, the more advanced the platform: for example, Bluetooth 5.0 offered a noticeable increase in range, speed, and support data transfer capabilities, while Bluetooth 5.2 has become particularly important for audio devices as a foundation for LE Audio.
For headsets, this means that new versions provide more efficient operation, more modern audio functions, and better compatibility with current gadgets.