1. How do I choose a Bluetooth headset?

Answer:

At first, choose the mono or stereo you need,  if stereo pls check whether your mobile phone support it .  

Second, there generally have many wearing styles such as earbud, ear hook, head-loading, clothespin-type, etc., you can choose one style according your needs.
 

2.What is the effective range of Bluetooth?

Answer:

Bluetooth is a protocol for short-distance data communications and applications, the nominal effective range is 10 meters, the original product's is 7-8 m,  high imitation product's  is 2-6 m. Signal is impacted by the  environment. Generally without noise if there is no obstructions between the headphone and mobile phone within 3 meters.

(Ps: it will have noises if putting some kinds of phones and earphones on different sides of his body.)

3.Whether Bluetooth headset battery can be changed, how about its life expectancy?

Answer:

Most Bluetooth headset battery is built-in lithium battery,  which can not be replaced, every new battery can charge about 500 times. According it can use 3 days after per charging , 500 times charging can use 1500 days, that is around 2-3 years. A bluetooth can also be eliminated after use for two years, so it is not necessary to worry about the problem of bluetooth headphone battery failure.

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