Design

FIT

In-ear

The fit of the earbuds.

INGRESS PROTECTION (IP) RATING

IPX5

The first number of the IP rating refers to protection against dust, while the second number refers to protection against liquid. E.g. a first number of 6 denotes that it is completely dustproof, and a second number of 7 denotes that the device can withstand full immersion in water.

WEIGHT

8.6g

We consider a lower weight better because lighter devices are more comfortable to carry. A lower weight is also an advantage for home appliances, as it makes transportation easier, and for many other types of products.

HAS NO WIRES OR CABLES

✔Umidigi AirBuds U

True wireless devices have no cables connecting any part of the device together. This is an important distinction as some wireless earbuds have cables connecting the two earbuds together.

WINGTIPS INCLUDED

✖Umidigi AirBuds U

These earbuds come with wingtips that can be attached for a more secure fit. Wingtips come in handy for sports and other physical activities. When used correctly, they prevent the earbuds from falling off.

SWEAT RESISTANCE

✔Umidigi AirBuds U

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

IS DUSTPROOF AND WATER-RESISTANT

✖Umidigi AirBuds U

The device is dustproof and water-resistant. Water-resistant devices can resist the penetration of water, such as powerful water jets, but not being submerged into water.

HAS STEREO SPEAKERS

✔Umidigi AirBuds U

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

WATERPROOF DEPTH RATING

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The waterproof depth rating indicates how well the device is protected against water ingress and water pressure. Devices which can withstand more water pressure are better for swimming or diving.

HAS UV LIGHT

✖Umidigi AirBuds U

The device kills germs, viruses and bacteria using an ultraviolet bulb.

HAS A DISPLAY

✖Umidigi AirBuds U

The device has an electronic display to present information to the user.

Sound quality

HAS ACTIVE NOISE CANCELLATION (ANC)

✖Umidigi AirBuds U

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.

HAS PASSIVE NOISE REDUCTION

✔Umidigi AirBuds U

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

DRIVER UNIT SIZE

13mm

The driver unit is the component that produces sound in the device. Bigger drivers are more powerful and can produce better bass.

LOWEST FREQUENCY

20Hz

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

HIGHEST FREQUENCY

20000Hz

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

HAS DOLBY ATMOS

✖Umidigi AirBuds U

Dolby Atmos is a surround sound technology that allows sounds to be interpreted as three-dimensional objects. By doing so, Dolby Atmos allows for immersive, 360-degree sound.

IMPEDANCE

Unknown. Help us by suggesting a value.

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.

SOUND PRESSURE LEVEL

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

HAS A NEODYMIUM MAGNET

✖Umidigi AirBuds U

Devices with neodymium magnets are lighter and more powerful than those which use ferrite magnets. They also have more bass and clear high notes.

Power

BATTERY LIFE

5h

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.

BATTERY LIFE OF CHARGING CASE

19h

The battery life of the charging case as given by the manufacturer. A charging case with a longer battery life allows you to recharge your headphones on the go multiple times before having to recharge the case itself.

CHARGE TIME

2h

The time it takes to fully charge the battery.

BATTERY POWER

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Battery power, or battery capacity, represents the amount of electrical energy that a battery can store. More battery power can be an indication of longer battery life.

HAS WIRELESS CHARGING

✖Umidigi AirBuds U

It supports a wireless charging standard such as Qi. To charge the device, you simply put it down on a compatible charging pad.

HAS A BATTERY LEVEL INDICATOR

✔Umidigi AirBuds U

An indicator shows you when the device has low battery.

HAS A RECHARGEABLE BATTERY

✔Umidigi AirBuds U

The battery can be recharged and used over again.