Resistance to sweat makes it ideal for use while doing sports.
Foldable devices are easier to transport and consume less storage space.
Devices with neodymium magnets are lighter and more powerful than those which use ferrite magnets. They also have more bass and clear high notes.
The driver unit is the component that produces sound in the device. Bigger drivers are more powerful and can produce better bass.
Audeze LCD2 Classic
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.
Sennheiser PXC 480
The battery can be recharged and used over again.
The time it takes to fully charge the battery.
Sony Xperia Ear Duo
An indicator shows you when the device has low battery.
The battery is removable and can be replaced by the user if broken.
Jaybird Run XT
Sennheiser IE 80S BT
Wireless devices allow users more freedom of movement.
The device can connect at a greater distance via Bluetooth or infrared to another device.
The device can connect to WiFi.
Meters OV-1 Bluetooth
More microphones result in better sound quality and enable the device to filter out background noise.
Bose Noise Cancelling Headphones 700
When covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction.