More microphones result in better sound quality and enable the device to filter out background noise.
2.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.
You can use your voice to control key functions of the device and you can easily access your device without pushing any button.
4.control panel placed on a device
There is a control panel on the device body, so you can easily access the volume control or remote without having to interact with a cable or another device it's connected to.
The manufacturer offers a branded wireless charging kit. To charge the device, you simply put it down on its charging base.
An accelerometer is a sensor used to measure the linear acceleration of a device. A common application is detecting when a device changes between vertical and horizontal positions.