Another important point of the Bluetooth headset is the transmission distance, which is independent of the Bluetooth version and depends on the Bluetooth technology PowerClass. Most mobile phones and mobile devices now use PowerClass2 with a standard transmission distance of 10 meters. The upgraded PowerClass1 increases the transmission distance to 100 meters. Both versions support the A2DP stereo transmission protocol and can be interconnected with stereo headphones. In general, the distance between the mobile phone and the Bluetooth headset is not too far. If there is no big obstacle in the middle, the transmission quality is very good within 7 meters, and the breakpoint will appear after more than 8 meters! More than 10 meters will lose connectivity between Bluetooth devices.
According to the actual feeling of use, the distance between the mobile phone and the Bluetooth headset is proportional to the noise of the call; in addition, when listening to music using a stereo Bluetooth headset, it is not too far away from the mobile phone, otherwise it is prone to intermittent phenomenon. In addition to functional considerations, the appearance and comfort of the Bluetooth headset is also a key factor that consumers must pay attention to when purchasing. Nowadays, many consumers hang their Bluetooth headsets on their ears at any time, so the styling becomes the basic condition; and each person's ears have different shapes, users have to try to wear comfort before purchasing, and then decide to buy; wear glasses People need to pay attention to the fact that the earphones of many Bluetooth headsets will conflict with the glasses legs, so you must know before you try them.