At the time of selection, please consider the main areas below:
product quality
When purchasing a pair of headphones, quality and performance are important items, such as battery life, radiation level, etc. However, the quality is generally poor or the quality is too high, the quality is limited, the product is not available due to the workmanship, the usage fee is not guaranteed, the product quality is different, the actual use function is very different, and the radio volume is too high.
amount of conversation
Due to the quality of the communication quality is a basic index of superiority and inferiority of the quality of the earbuds, under general circumstances, the earbuds designed for use with a rod are closer to each other, and the quality of the earbuds obtained is comparable to that of other types of products.
waiting time
Because of the daily use of this handset, the standby time of the earpiece is extended, the heat of the constant charge when avoiding work, this is also one of the standards for the performance of the handset.
Wear suitability
The human ear is relatively weak, resulting in poor ear material quality, or the presence of some slight defects in the design, after a long time of listening, the feeling of unsatisfactory production. Please check the details before purchasing this item, and select a suitable self-made earpiece.
Usage
Choosing a pair of earbuds, why should you buy? The main thing you need to do is to come here: (1) Use language learning. Low-priced head-mounted listening machine only available for selection, so it's better to adjust the volume of the ear-plug. Ordinary electromagnetic earpieces can be used immediately. ③ Use the music. Popular award-winning music, just-on-demand purchase box, like listening or head-on ear. If you prefer high-quality music, you should choose high-quality earbuds, such as high-quality earbuds, flat-screen or conductive earbuds. The middle-aged and high-sex BRD type ear machine is the primary choice. ④Convenience of use. No need for a wireless earbuds connection, convenient to use, you can use the earbuds with external sound recording function, you can listen to various languages ??at any time. ⑤ Vocal tract. Single voice and double voice training equipment required separate distribution, double voice ear.
Compatibility
When choosing a pair of ears, the most important issue is whether or not to give the ear. There are some blue ears and hands, and the main reason is the difference in standards. There are three main standards of the earpiece———HandfreeProfile (HFP), HeadsetPro-file (HSP) and A2DP. HFP represents immune function, and HSP represents hearing function. Consumers must first play neat and clean and self-supporting manual specifications, suitable for re-challenge selection. A2DP is a high-end audio transmission standard, which allows you to transmit 3D voice signals.
Comparable to the HFP formal earpiece support hand function, the consumer can set up the ear desk operation handset, which can be used as an option, such as call hold, call rejection, etc. Mainly the HFP format supported by the blue ear machine, and the HFP supported by both parts simultaneously.
core piece tile
There are three major companies that supply cores for earpieces, one is the British CSR company, the other is the American Broadcom company, and Broadcom's products account for more than 80% of the market.
distance
Distinctive distance between earbuds is a big concern. Regardless of the transmission distance of the Bluetooth ear machine and the Bluetooth version, the major measures are technical advances. PowerClass2 standard distance is 10 meters, and the standard PowerClass1 standard distance is 100 meters, and provides Hi-Fi 3D audio effect. In general, the distance between the hand and the ear can't meet, and the distance is about 2 meters to 3 meters.
printed book
When the consumer buys a pair of blue ears, the standard for Bluetooth 1.1, 1.2, 2.0+EDR, 2.1+EDR, etc. is different. 1.1 is the most universal, 1.2 is the new mainstream, 2.0 is the 2006 estimate, 2.1+EDR version, the latest is 3.0 is the mainstream, 4.0 is the latest blue ear technology. Anti-dry blue ear function. Different blue version, relevant signal quality. The new version of the book has been updated to overcome its strengths. The new edition is available in Tokyo and below, and it is suitable for consumer selection when purchasing.
Outline
In addition to the performance consideration, the external appearance of the ear canal and the suitability of the product are also important considerations when choosing a consumer. Each person's form is different.