More microphones result in better sound quality and enable the device to filter out background noise.
Nokia BH-905i: 10
3. can be used as a headset
A headset is one headphone or pair with a built-in microphone. Headsets can be used for applications which require communication i.e. Skype, games with voice chat, mobile phones etc.
96% have it
4. no battery needed
This device works without batteries. It weighs less and you don't have to worry about recharging or replacing the battery.
27% have it
5. has an in-line control panel
There is a control panel on the cable, so you can easily operate the device without having to interact with it.
37% have it
6. has a neodymium magnet
Devices with neodymium magnets are lighter and more powerful than those which use ferrite magnets. They also have more bass and clear high notes.
18% have it
7. lowest frequency
The lowest frequency at which the device produces audio. The lower the low-frequency response, the stronger and juicier the bass.
Audio-Technica ATH-CKM500i: 5Hz
8. highest frequency
The highest frequency at which device produces audio. The higher the high-frequency response, the clearer and crispier the treble.
Audio-Technica ATH-CKM500i: 25000Hz
9. has an on-ear form
This device comfortably rests on top of your outer ears. As it doesn't block out everything from the outside world, it's preferred in places like office environments and recommended for outdoor activities.
9% have it
10. sound pressure level
Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
Sennheiser Presence UC: 118dB/mW
Impedance is the device’s electrical resistance to the current being pushed through it. The lower the impedance, the easier it is to get higher volume and requires less power.
Beyerdynamic MMX 101 iE: 12Ohms
12. cable length
A long cable ensures more freedom of movement.
Nokia BH-905i: 2.9m
13. driver unit size
The driver unit is the component that produces sound in the device. Bigger drivers are more powerful and can produce better bass.