Your guide to choose the right Bluetooth earphones?

Bluetooth earphones come in various designs some come with a touch feature and some come with a button on their smooth flexible band that you wear around your neck. One can also use a multi-function button or touch to play, pause, end or reject a call. Other than build quality, Connectivity and touch following are the features one might know before choosing a Bluetooth earphone.

1. Sensitivity: Sensitivity is the amount of sound decibels an earphone can produce for one milliwatt of the electrical signal. Higher the sensitivity higher the sound you could hear. Sensitivity of an earphone range from 80dB to 110dB.You should try buying an earphone with high sensitivity to minimize the power usage, which helps in longer battery life.
2.  Impedance: It works as an opposition to the current flow. It is measured in Ohms. Higher the impedance less current will flow and the less sound level is produced. It is preferred to have less impedance. High impedance earphone works great with the devices carrying high amplifiers which is not possible for the portable devices it doesn’t have an inbuilt amplifier thus You should buy one with low impedance if you are looking to connect with any portable devices.
3.  Acoustic System: Earphones are transducers with no headbands like headphones. The in-ear earphones, use a foam or other soft material to hold the earphone in the ear canal, thus isolating it from ambient noise. Forming an acoustic seal makes the ear canal part of the earphone system and modifies its frequency response. The advantages are less volume is required and audio quality is typically better. You want a good fit closed acoustic earphones which can reduce noise efficiently.
4. Magnet type: The earphones act as a transducer converting electrical energy into mechanical wave energy. They often do so via electromagnetic induction, which requires a conductor and a magnetic field supplied by the magnet. Neodymium is the magnet used in most of the specifications of earphones even ferrite magnets used. Magnet type may vary according to the production cost of the earphone. You must not worry about the type of magnet that is handled by manufacturers.
5. Diaphragm: Magnets are attached to this diaphragm. It is a thin membrane inside the earphone which vibrates and produces sound. There are different shapes and designs of diaphragms its upon the manufacturer to choose the best designs according to them.
   
6.  Voice coil: It is a coil-wire inside the earphone which is made up of aluminium since it cannot withstand long usage it has been replaced by copper can in earphones these days.
   
7.  Bluetooth: Most commonly used technology is Bluetooth. This can pair with any Bluetooth enabled device within seconds which is within 10 meters radius. Checking the Bluetooth connectivity is a must before choosing your wireless devices.
   
8.  Noise cancellation: Noise cancellation earphones pick up the outside noise and cancel it out while playing the sound. It is great for audiophiles.
   
9.  IPX rating: Highest water resistance that wireless earbuds can offer is IPX7.So users are advised to buy a high IPX rating earphone.