Comparison New Bee M53 vs New Bee M51

— 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.

The capacity of the battery installed in the device (see "Power").

Theoretically, a higher battery capacity allows you to work longer on one charge. At the same time, the actual battery life will also depend on the power consumption of the device, and it is determined by a number of technical specs. Therefore, it is better to evaluate battery life not by battery capacity, but by directly claimed operating time (see below). It makes sense to use this parameter if the operating time is not specified; at the same time, it makes sense to make conclusions only if devices similar in specs differ in capacity — for example, 60 and 110 mAh.

Time of operation of the self-powered device (see "Power") on one battery charge.

Usually, the battery life in the talk mode is meant, when the device consumes the most energy. In headsets with high-capacity batteries, this battery life can be 9 hours or more. However, talking for several hours without pauses is almost impossible, so in fact the operating time is noticeably longer than in the specifications. So, a headset with an operating time of the same 9 hours is most likely quite enough for a 12-hour work shift, even if you have to constantly make calls through it; and if we are talking about only 5 – 6 calls per day, then the charge is guaranteed to last for several days, or even a week. At the same time, the difference in the claimed operating time is usually quite consistent with the difference in actual battery life, and it is quite possible to compare the real capabilities of different models by it.