H2O Audio Surge Sportwrap 2G Waterproof 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.

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

For example

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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.

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

Allows you to change ear pads without buying new ones.

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

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

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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.

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