Sony WH-H900N h.ear on 2 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.

Comfortable full-size form with earcups that fully enclose your ears. This model is loved for its increased sound isolation and the fact that it won't leak sound to your neighbors. It offers potential for maximum bass and loudness levels.

With a detachable cable you can use alternative cables, and if the cable is pulled it will pop out instead of breaking.

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Resistance to sweat makes it ideal for use while doing sports.

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The device is protected with extra seals to prevent failures caused by dust, raindrops, and water splashes.

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The highest frequency at which device produces audio. The higher the high-frequency response, the clearer and crispier the treble.

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The lowest frequency at which the device produces audio. The lower the low-frequency response, the stronger and juicier the bass.

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Devices with a higher sound pressure level are generally louder when supplied with any given audio source.

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The device sits tightly in place, creating an acoustic seal which reduces background noise and prevents your music from leaking out.

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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.

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This type of device allows you to listen at lower volume levels, causing less ear fatigue as you don't have to crank up the volume to overcome background noise. Ideal for plane rides and morning commutes.

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 battery can be recharged and used over again.

The time it takes to fully charge the battery.

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An indicator shows you when the device has low battery.

The battery is removable and can be replaced by the user if broken.

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The device can connect at a greater distance via Bluetooth or infrared to another device.

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Wireless devices allow users more freedom of movement.

A standard 3.5mm male connector is suitable for use with all MP3 players and computer sound cards.

Device supports fast Bluetooth pairing using NFC so it can communicate with other devices over Bluetooth. You can fastly pair devices without entering a code by simply holding one device next to the device with which it is to be paired.

The device can connect to Wi-Fi.

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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.

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.

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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.

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