1.can be used as a headset
A headset is one headphone or pair with a built-in microphone. Headsets can be used for apps that require communication i.e. Skype, games with voice chat, mobile phones, etc.
2.has a noise-canceling microphone
These microphones are designed to filter out background noise from the desired sound. Especially useful in noisy environments.
More microphones result in better sound quality and enable the device to filter out background noise.
4.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.
When covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction.
With voice prompts, you will automatically receive information via audio messages – for instance, you may find out that the battery is running low, and it's time to recharge the device.