Need
Ever since the Apple iPhone 7 and Android phones started the campaign to remove the 3.5mm headphone output port, the sales of wireless headphones also started to increase rapidly. It is often said that the first True-Wireless headphones were the AirPods introduced by Apple, but this is not accurate because there were also a few True-Wireless headphones from Japan, like Onkyo. Still, Airpods have Probably the most famous headset for mainstream customers, and so far, there is no equal competitor in terms of coverage. Perhaps from the AirPods wave, many customers find the convenience of completely cordless headphones along with extremely neat carrying. Even if compared with True-Wireless headphones with conventional wired headphones, thanks to the absence of wires, you can put them in an extremely compact and durable charging case in many cases.
Completely wireless connection
One of the most common problems is that the connection between the phone and the headset is completely wireless. Except for the AirPods, which use the Apple W1 chip, the connection is extremely easy, but it is a problem if you connect to Android. Connecting to current True-Wireless headsets using dedicated small antennas or Qualcomm’s chipsets can meet the connection needs of conventional products with high stability. However, some products have an extremely difficult way to turn on the pairing mode or touch to connect NFC like Sony’s headphones; in general, the connection depends on quite a bit on each device.
How to make the two True-Wireless headsets communicate with each other.
That is the problem that most True-Wireless headphones need to solve: the connection stability between the two headsets when there is no wire to connect between the two ears to synchronize the time connection between the two ears. The mechanism is not too special. A headset will be responsible for receiving Bluetooth signals from the phone and then transmitting it back to the other ear (Master and Slave earbud) through the same Bluetooth wavelength walkie-talkies or radios. The quality and stability of both headsets will depend on the quality of the antenna or the SoC chipset. Therefore, many headphones have problems when the connection between the two ears is stable because the communication antenna between the two channels is of unstable quality. At the same time, many current headsets only support voice calls. One ear is also because the master headset cannot transmit real-time talk signals to the other ear.
How is the sound quality of True-Wireless wireless headphones?
The sound quality of True-Wireless headphones, like other conventional headphones, depends mainly on the driver and the sound chamber design of each different headset. However, there is also a factor that greatly affects the audio transmission quality: the supported codecs of the Bluetooth receiver part on the headset. In general, for expensive headphones, you should see if your headset and phone support high-end codecs such as AAC, LDAC, aptX (iPhone only supports AAC codec) because of the codecs. That also contributes significantly to the sound quality. As for the latest Bluetooth version, Bluetooth 5.0, there will be no impact on the transmitted sound quality.
The safety of True-Wireless headphones
Wireless headphones all use radio waves similar to Wifi waves, but the transmission frequencies are very low and are considered completely harmless to listeners. By direct comparison, the radio frequency from the phone is thousands of times higher than that of wireless headphones.
As for the battery, the built-in battery has a rather small capacity and is difficult to cause a fire with low-intensity current control ICs. However, users should not suddenly change the battery temperature or use it in too cold or hot environments.
Battery life of True-Wireless headphones
Because inside the housing of True-Wireless headphones, you need all three parts, including Bluetooth Receiver, Driver, and Battery. The internal batteries of True-Wireless headphones have a fairly short use time, usually only from 3 to 5 hours, shorter than conventional wired Bluetooth headsets. However, most True-Wireless headphones are equipped in carrying cases with charging functions when not in use to overcome this situation. As a result, True-Wireless headphones can be used for a long time and are also very practical when listeners often do not listen continuously for up to 3 hours, so when not listening, they will return to a rather compact carrying case.
In case of loss of one ear
Most manufacturers currently support the purchase of a headset, but there are many technologies to assist in finding the lost headset. With quite a few TrueWireless headphones, a Find My Buds feature also helps users locate the headset via GPS or loud sound. In addition, the ability to grip the ears of True-Wireless headphones is also quite good with the sporty design, and the ear fins and ear wings grip the ears well. Hence, the possibility of falling without knowing is also unlikely.
Special Features
Usually, one of the main uses of True-Wireless headphones is to exercise comfortably without the hassle of wires. So there are quite a few True-Wireless headphones on the market that support water resistance so that users can comfortably use them in rainy conditions or exercise a lot.
Some True-Wireless headphones also have active noise cancellation like NuHeara and Sony, allowing people to listen to music in any environment comfortably.