The quality of the product
Buy a Bluetooth headset should pay more attention to the quality and performance of the products, such as battery life, the level of radiation. And General poor quality or of lesser quality Bluetooth headsets, for cost control, both in workmanship, or on materials are not guaranteed, poor quality of products, the actual use of functional data varied widely, and the amount of radiation is very high.
Because quality is the basic measure of a Bluetooth headset quality parameters, typically using rods designed Bluetooth headset, the microphone closer to the mouth, and the call quality is superior to other types of products.
Because this is the same phone for everyday use, earphone standby time is longer, often charging troubles can be avoided, which is one measure of Bluetooth headsets.
The human ear is more delicate, if the headset ear loop material is not good, or there are some defects in design, are worn after a long time, will produce feelings of discomfort. So before you buy should be carefully examined, select Bluetooth headset that fits your ear-shaped.
Buy Bluetooth headsets, mainly to what to buy? It depends on what do you mainly use it for--first used in language learning. Simply choose cheaper headphones just to headset with volume control for good, II used to listen to the news. Ordinary magnetic earphone. ③ used to listen to music. General music, simply buy a mid-range phone, such as auscultation or moving coil headset. If you enjoy high quality music, you should not care about the price, buy high-fidelity headphones, such as high quality moving-coil, flat or condenser headset. BRD headphones with high performance is the first choice. ④ easy to use. Wireless Bluetooth headphones without wires, is extremely easy to use, there are also headphones with a radio function, allows you to listen to all kinds of music and language program at any time. ⑤ channel. Single-channel and dual-channel power amplifier devices equipped with single and double-channel headphones.
When choosing a Bluetooth headset, the most important problem is that cell phones and headsets are compatible. Some Bluetooth headsets are not compatible with mobile phones, mainly because of the different specifications. ---HandfreeProfile Bluetooth headset has three main specifications (HFP) and HeadsetPro-file (HSP) and A2DP of three. Representatives of HFP hands-free function, and HSP represents the headset function. Consumers have to make sure your mobile phone supports what kind of specifications, and then choose the right Bluetooth headset pairing. A2DP is an advanced audio transmission specifications, allowing transmission of stereo audio signals, much better quality compared to the HFP and HSP.
Supports the HFP formats Bluetooth headset mobile phone fairly complete, consumers can operate on headset phone set the Redial, call reservations, refused to listen to calls, such as hands-free option. Nokia, Motorola, Sony Ericsson Bluetooth headset launched almost all dominated by HFP formats are supported. There are also some models also support the HFP and HSP. If special Bluetooth headset A2DP format, compatible with HSP and HFP formats, is by far the best version of the format.
Bluetooth headset suppliers of chips there are three large companies, is the United Kingdom's CSR Corporation, another is the United States of the Broadcom Corporation, Broadcom's products in the market share accounted for more than 80%.
Bluetooth transmission distance is also more concerned about the problem. Has nothing to do with the Bluetooth version Bluetooth transmission distance, depending on the sophistication of technology. PowerClass2 standard transmission distance 10 meters and upgrade of PowerClass1 transmission distance up to 100 meters, and Hi-Fi stereo sound. In General, the distance is not too far from phone to Bluetooth headset, safe distance of transmission is about 2 m to 3 m.
When consumers buy Bluetooth headsets, often see Bluetooth1.1, 1.2, 2.0+EDR, 2.1+EDR and other figures, figures representing different specifications. Currently 1.1 most common, 1.2 is the new mainstream, 2.0 was launched in 2006, 2.1+EDR versions, the latest is 3.0 is the mainstream, 4.0 is the latest Bluetooth technology, these numbers represent versions of, also represents the headset anti-jamming ability of Bluetooth headsets. Bluetooth version, concerns the quality of the received signal. New version puts more emphasis to overcome noise. New versions can be backward compatible, consumers should consider price and demand.
In addition to functional considerations, Bluetooth headset appearance and wearing comfort is the key to consumers must pay attention to. Everyone faces different users before you buy to try wearing comfort, and then buy.
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