Design
Fit
The fit of the earbuds.
- Anker Soundcore Liberty 4 Pro in_ear
- Nothing Ear Open open_ear
Ingress Protection (IP) rating
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.
- Anker Soundcore Liberty 4 Pro ipx5
- Nothing Ear Open ip54
Water resistance
The level of water resistance that the device has.
- Anker Soundcore Liberty 4 Pro sweat_resistant
- Nothing Ear Open water_resistant
Weight
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.
- Anker Soundcore Liberty 4 Pro null
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- Nothing Ear Open 16.2
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Wingtips included
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.
- Anker Soundcore Liberty 4 Pro
- Nothing Ear Open
Has a display
The device has an electronic display to present information to the user.
- Anker Soundcore Liberty 4 Pro
- Nothing Ear Open
Sound quality
Has active noise cancellation (ANC)
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.
- Anker Soundcore Liberty 4 Pro
- Nothing Ear Open
Has passive noise reduction
The device sits tightly in place, creating an acoustic seal which reduces background noise and prevents your music from leaking out.
- Anker Soundcore Liberty 4 Pro
- Nothing Ear Open
Driver unit size
The driver unit is the component that produces sound in the device. Bigger drivers are more powerful and can produce better bass.
- Anker Soundcore Liberty 4 Pro 10.5
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- Nothing Ear Open 14.2
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Lowest frequency
The lowest frequency at which the device produces audio. The lower the low-frequency response, the stronger and juicier the bass.
- Anker Soundcore Liberty 4 Pro 14
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- Nothing Ear Open 20
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Highest frequency
The highest frequency at which device produces audio. The higher the high-frequency response, the clearer and crispier the treble.
- Anker Soundcore Liberty 4 Pro 40000
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- Nothing Ear Open 20000
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Supports spatial audio
Spatial audio is a technology that creates an immersive, three-dimensional sound experience by simulating audio sources from various directions and distances. It enhances the listener's perception of soundscapes, providing a more realistic and engaging experience for music, movies, or games.
- Anker Soundcore Liberty 4 Pro
- Nothing Ear Open
Power
Battery life
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.
- Anker Soundcore Liberty 4 Pro 10
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- Nothing Ear Open 8
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Battery life of charging case
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.
- Anker Soundcore Liberty 4 Pro 40
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- Nothing Ear Open 22
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Battery life (ANC)
The battery life when using active noise cancellation (ANC), as given by the manufacturer.
- Anker Soundcore Liberty 4 Pro 7.5
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- Nothing Ear Open null
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Charge time
The time it takes to fully charge the battery.
- Anker Soundcore Liberty 4 Pro null
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- Nothing Ear Open 1.5
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Battery power
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.
- Anker Soundcore Liberty 4 Pro null
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- Nothing Ear Open 64
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Has wireless charging
It supports a wireless charging standard such as Qi. To charge the device, you simply put it down on a compatible charging pad.
- Anker Soundcore Liberty 4 Pro
- Nothing Ear Open
Connectivity
Has LDAC
LDAC is a codec developed by Sony for Bluetooth audio. It is capable of a very high bitrate of 990kbps, which provides high resolution audio. It can also automatically adjust to a lower bitrate of 330kbps or 660kbps to increase stability.
- Anker Soundcore Liberty 4 Pro
- Nothing Ear Open
Features
Has ambient sound mode
Ambient sound mode uses microphones to pass through ambient noises so that they can still be heard. It’s useful when you want to listen to music but also be aware of what’s happening around you, for example when you’re jogging but still want to be able to hear traffic.
- Anker Soundcore Liberty 4 Pro
- Nothing Ear Open
Has in/on-ear detection
Sensors can detect when they are removed from your ears so that the music is paused, saving battery life.
- Anker Soundcore Liberty 4 Pro
- Nothing Ear Open
Has a built-in camera remote control function
The device can control your smartphone’s camera remotely (without installing third-party apps), allowing you to take shots even if your phone isn't near you.
- Anker Soundcore Liberty 4 Pro
- Nothing Ear Open
Microphone
Number of microphones
More microphones result in better sound quality and enable the device to filter out background noise.
- Anker Soundcore Liberty 4 Pro 6
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- Nothing Ear Open 4
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Has a noise-canceling microphone
These microphones are designed to filter out background noise from the desired sound. Especially useful in noisy environments.
- Anker Soundcore Liberty 4 Pro
- Nothing Ear Open
Miscellaneous
Is dustproof and water-resistant
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.
- Anker Soundcore Liberty 4 Pro
- Nothing Ear Open