Design
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.
- Fresh 'n Rebel Twins 2 ipx4
- Happy Plugs Joy Pro null
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.
- Fresh 'n Rebel Twins 2 8g
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- Happy Plugs Joy Pro 7
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Sweat resistance
Resistance to sweat makes it ideal for use while doing sports.
- Fresh 'n Rebel Twins 2
- Happy Plugs Joy Pro
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.
- Fresh 'n Rebel Twins 2
- Happy Plugs Joy Pro
Has stereo speakers
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
- Fresh 'n Rebel Twins 2
- Happy Plugs Joy Pro
Waterproof depth rating
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.
- Fresh 'n Rebel Twins 2 null
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- Happy Plugs Joy Pro null
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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.
- Fresh 'n Rebel Twins 2
- Happy Plugs Joy Pro
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.
- Fresh 'n Rebel Twins 2 null
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- Happy Plugs Joy Pro 10
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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.
- Fresh 'n Rebel Twins 2 null
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- Happy Plugs Joy Pro 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.
- Fresh 'n Rebel Twins 2 null
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- Happy Plugs Joy Pro 20000
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Sound pressure level
Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
- Fresh 'n Rebel Twins 2 null
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- Happy Plugs Joy Pro 25
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Impedance
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.
- Fresh 'n Rebel Twins 2 null
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- Happy Plugs Joy Pro 101
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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.
- Fresh 'n Rebel Twins 2 4h
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- Happy Plugs Joy Pro 5
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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.
- Fresh 'n Rebel Twins 2 16h
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- Happy Plugs Joy Pro 20
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Charge time
The time it takes to fully charge the battery.
- Fresh 'n Rebel Twins 2 1h
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- Happy Plugs Joy Pro null
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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.
- Fresh 'n Rebel Twins 2 null
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- Happy Plugs Joy Pro 1.5
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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.
- Fresh 'n Rebel Twins 2 null
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- Happy Plugs Joy Pro 35
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Has a battery level indicator
An indicator shows you when the device has low battery.
- Fresh 'n Rebel Twins 2
- Happy Plugs Joy Pro
Has a rechargeable battery
The battery can be recharged and used over again.
- Fresh 'n Rebel Twins 2
- Happy Plugs Joy Pro
Connectivity
Bluetooth version
Bluetooth is a wireless technology standard that allows data transfers between devices placed in close proximity, using short-wavelength, ultra-high frequency radio waves. Newer versions provide faster data transfers.
- Fresh 'n Rebel Twins 2 null
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- Happy Plugs Joy Pro 5.3
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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.
- Fresh 'n Rebel Twins 2
- Happy Plugs Joy Pro
Has aptX Adaptive
aptx Adaptive is an audio codec for Bluetooth devices that is developed by Qualcomm. It has a variable bit rate (between 279kbps and 420kbps), which means it can adjust the bit rate for different scenarios, such as listening to HD audio or reducing interference from other devices.
- Fresh 'n Rebel Twins 2
- Happy Plugs Joy Pro
Has aptX Low Latency
aptX Low Latency is a codec developed by Qualcomm. It uses Bluetooth 5.0 technology to provide low latency audio (around 40ms), which is useful when you want to avoid audio lag (e.g. when playing games).
- Fresh 'n Rebel Twins 2
- Happy Plugs Joy Pro
Has aptX HD
aptX HD is an audio codec for Bluetooth devices that is developed by Qualcomm. It supports high quality 24-bit audio (at a bit rate of 576kbps).
- Fresh 'n Rebel Twins 2
- Happy Plugs Joy Pro
Audio latency
Latency refers to the time it takes for the audio signal to be transmitted to your headphones/earbuds. Lower latency reduces audio lag, and is particularly important when playing games or watching videos.
- Fresh 'n Rebel Twins 2 null
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- Happy Plugs Joy Pro null
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Maximum Bluetooth range
The device can connect at a greater distance via Bluetooth or infrared to another device.
- Fresh 'n Rebel Twins 2 10m
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- Happy Plugs Joy Pro null
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Supports Bluetooth pairing using NFC
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.
- Fresh 'n Rebel Twins 2 null
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- Happy Plugs Joy Pro 10
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Can be used wirelessly
Wireless devices allow users more freedom of movement.
- Fresh 'n Rebel Twins 2
- Happy Plugs Joy Pro
Has AAC
AAC is a codec that is used for Bluetooth audio. It supports 24-bit audio at 250kbps. Because it uses psychoacoustic modeling, it can provide better results than other codecs at a similar bit rate.
- Fresh 'n Rebel Twins 2
- Happy Plugs Joy Pro
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.
- Fresh 'n Rebel Twins 2
- Happy Plugs Joy Pro
Has in/on-ear detection
Sensors can detect when they are removed from your ears so that the music is paused, saving battery life.
- Fresh 'n Rebel Twins 2
- Happy Plugs Joy Pro
Has find earbuds feature
You can use the app to play a sound from your earbuds to help you locate them.
- Fresh 'n Rebel Twins 2
- Happy Plugs Joy Pro
Supports fast charging
Fast charging technologies, like Qualcomm’s Quick Charge or MediaTek’s Pump Express, are used to reduce the time it takes to charge a device. For example, with Quick Charge 3.0, the battery can be charged to 50% in just 30 minutes.
- Fresh 'n Rebel Twins 2
- Happy Plugs Joy Pro
Warranty period
When covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction. Note: This may vary by region.
- Fresh 'n Rebel Twins 2 null
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- Happy Plugs Joy Pro 1
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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.
- Fresh 'n Rebel Twins 2
- Happy Plugs Joy Pro
Microphone
Number of microphones
More microphones result in better sound quality and enable the device to filter out background noise.
- Fresh 'n Rebel Twins 2 2
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- Happy Plugs Joy Pro 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.
- Fresh 'n Rebel Twins 2
- Happy Plugs Joy Pro