When one thinks of a headphone, hardly anyone thinks of them as a loudspeaker. For most people, it is a pair of ear pieces that helps you listen to music. In fact, it is a loudspeaker, which does not speak out loud but whispers in your ears. Well, for some people it does work as a loudspeaker, literally, when they play a loud music with headphones on. Nowadays, everyone has a piece of headphone, whether the big ones, which covers your ear and fits the head in a U shape, or the one, which has only one ear piece that is connected to a wire. As already mentioned all kinds of headphone have speakers in them, be it single or double speakers. That is the only way that music and speech can be heard, through these devices. Headphones are also known as headsets and stereo phones, while the ear piece versions are known as earphones. Headphones are popular today, as most people like listening to music on the go. These devices can be connected to the cell phone, radio and I pod, which are famous for staying with people all the time. They can also be connected to the computer and to the television; you can watch the television and watch movies on computer, without disturbing anybody else.
The type: Depending on how you are going to use your headphone, you can get a headset or an earphone. If you are going to use your headphone outside and on the go, it is better to get an earphone, as it is light and easy to be carried around. If you want good covering for your ear, and are going to use it inside your house, then it is better if you get a headset.
The volume adjuster: Look for the volume adjuster and know how to use it, it is not a good idea to let your ears expose to heavy and loud music. Constant feeding of noise, which is close to the ears, can harm your hearing ability. So, you should be careful about putting on your earphone or headphone for a long period of time. Likewise, depending on what is comfortable for your ears, you should get a headphone that either covers it whole, or just your ear holes.
The brand: It is better to buy a branded headphone, and you do not need to spend a lot of money, just because it is branded. If you are buying a headphone from a reputable producer, then you get warranty of the quality, and also its health effects.