Apple AirPods (2nd. Gen) review: specs and price

Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.

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The earbud form is ultracompact and lightweight, with little or no interference with earrings, spectacles, hats, or hairstyles. For some people it is more comfortable than in-ear form.

The in-ear device is ultracompact and lightweight, with little or no interference with earrings, spectacles, hats, or hairstyles. It is inserted in the ear canal itself and blocks out a lot of environmental noise. It has stronger bass tones and is unlikely to fall out of the ear.

More microphones result in better sound quality and enable the device to filter out background noise.

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These microphones are designed to filter out background noise from the desired sound. Especially useful in noisy environments.

The battery can be recharged and used over again.

The device's battery life (when in use) as given by the manufacturer. With a longer battery life you have to charge the device less often.

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The time it takes to fully charge the battery.

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Wireless devices allow users more freedom of movement.

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.

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.

You can use your voice to control key functions of the device and you can easily access your device without pushing any button.

The device comes with its own special case or pouch, which is useful for safe transportation.

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.

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.