Devialet Gemini 2 Vs. Jbl Tune Flex Review In Detail

Ingress Protection (Ip) Rating

JBL Tune Flex IPX4

Devialet Gemini 2 IPX4

IP ratings is the rank of protection given by a casing, against dust and water. The letters 'IP' are followed by two values The first value represents protection against solids say dust, followed by the one that refers to protection against liquids (sweat).

Scoring IPX4, the Devialet Gemini 2's rating for solids indicates that no data available to specify a protection rating, and the second value of 4 means that they can withstand low pressure spray similar to that of a shower head when tilted at 180° for 10 minutes.

Compared to the Devialet Gemini 2, JBL Tune Flex have a rating of IPX4 meaning that we are not yet certain of their rating with solids (dust) and that of liquids is that, they both have the same rating against liquids

Weight

JBL Tune Flex 9.6g

Devialet Gemini 2 12g

Devialet Gemini 2 have a weight of 12g . We prefer a lower weight better because lighter devices are easier to move with.

The JBL Tune Flex, at 9.6g are lighter than the Devialet Gemini 2 by -2.4g

Has No Wires Or Cables

JBL Tune Flex ✓

Devialet Gemini 2 ✓

For a device to be true wireless it should have no cables linking any part of the device together, Devialet Gemini 2 are true wireless for this matter since they have no cables. This is a major difference since wireless earbuds have wires connecting the pair of earbuds together.

JBL Tune Flex also is true wireless since it has no wires connecting the pair of earbuds together.

Sweat Resistance

JBL Tune Flex ✓

Devialet Gemini 2 ✓

Devialet Gemini 2 have sweat resistance

JBL Tune Flex's resistance to sweat makes both devices good for use while doing sports such as long-distance running, marathons, cardio sweat workouts , etc

Has Stereo Speakers

JBL Tune Flex ✓

Devialet Gemini 2 ✓

Devialet Gemini 2 have stereo speakers, what this means is that Devialet Gemini 2's speakers deliver sound from separate channels on both left and right sides, creating a richer sound and a better listening experience.

The JBL Tune Flex also have stereo speakers

Has Active Noise Cancellation (Noise Control)

JBL Tune Flex ✓

Devialet Gemini 2 ✓

Active noise cancellation uses advanced technology to reduce unwanted ambient sounds. How it works, it detects and analyzes the sound pattern outside and inside the earbud and inverts the soundwaves to counter it. In simple terms, it's like taking +1 (sound from your surrounding) then producing -1 (inverted noise) giving zero which results in a reduced level of noise.

Devialet Gemini 2 have Active Noise Cancellation allowing you to listen at lower volume levels, causing less ear fatigue as you don't need to crank up the device volume to outcompete background noise.

The JBL Tune Flex too have ANC making both earbuds ideal for flights and rush hour commutes. The Devialet Gemini 2 and JBL Tune Flex work with different noise cancellation modes, pick the noise cancellation type that suits your travel or that enhances your relaxation time.

Has Passive Noise Reduction

JBL Tune Flex ✓

Devialet Gemini 2 ✓

The Devialet Gemini 2 stay tightly in place, creating a sound covering that tones down your environment noise well as preventing the device music from leaking out at the same.

Both JBL Tune Flex, and Devialet Gemini 2 have passive noise reduction this means that they tone down ambient noise instead of actively using technology to cancel it out.

Driver Unit Size

JBL Tune Flex 12mm

Devialet Gemini 2 10mm

Devialet Gemini 2 driver unit is 10mm in diameter, bigger drivers are more powerful, and can produce better bass. The driver unit is the component that makes sound in the device, the unit size dictates the sound made by the device.

JBL Tune Flex driver unit is 12mm in diameter, making them have a larger driver unit than that of Devialet Gemini 2 by 2mm , a common assumption that driver units of a bigger size automatically produce better sound quality.

However, large drivers usually have difficulty producing high frequencies so yeah, larger drivers are capable of generating louder sound, but this does not indicate that they produce better quality sound.

Lowest Frequency

JBL Tune Flex 20Hz

Devialet Gemini 2 5Hz

The Devialet Gemini 2's lowest frequency is at 5Hz, low-frequency response inidcates how well an audio component generates low audible frequencies and if it makes any changes to the signal on its way through.

JBL Tune Flex's lowest frequency is at 20Hz, this implies that Devialet Gemini 2 make sound with a juicier bass than the JBL Tune Flex

Highest Frequency

JBL Tune Flex 20,000Hz

Devialet Gemini 2 20,000Hz

Devialet Gemini 2's highest frequency is at 20,000Hz, high-frequency response shows how well a particular audio device produces high human frequencies and if it makes any changes to the signal while at it.

JBL Tune Flex's highest frequency is at 20,000Hz, this means that both devices generate equal treble

Sound Pressure Level

JBL Tune Flex 108dB/mW

Devialet Gemini 2 120dB/mW

SPL, is the level of pressure of sound, in decibels, dB, Devialet Gemini 2's measurement is 120dB/mW. Devices with a higher sound pressure level are generally louder when supplied with any given audio source.

JBL Tune Flex's sound pressure level measurement is 108dB/mW. How loud something is can be considered differently by different people, so we need to have a way of getting an objective measurement of sound level expressed in numerical terms.

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Battery Life

JBL Tune Flex 8hours

Devialet Gemini 2 5hours

Devialet Gemini 2's battery life is 5 hours, these last less than 5 hours of listening which is considered average before recharge. A device's battery life is usually given by the manufacturer, and with longer battery life, you get to use it for longer and have to charge the device less often.

JBL Tune Flex's battery life is more than that of Devialet Gemini 2 by 3 hours . Each time you recharge your device, they get a little less listening time. The effect is barely noticeable at first, but over a few years, your wireless earbuds will have shorter listening time.

Battery Life Of Charging Case

JBL Tune Flex 24hours

Devialet Gemini 2 17hours

The battery life of the charging case is given by the vendor, and the Devialet Gemini 2's case has a charge of 17 hours. A charging case with a longer battery life allows you to recharge your earbuds on the go multiple times before recharging the case itself.

JBL Tune Flex's charging case has a battery life of 24 hours, more than that of Devialet Gemini 2 by 7 hours

Charge Time

JBL Tune Flex 2hours

Devialet Gemini 2 1hours

It requires 1 hours to fully charge the Devialet Gemini 2's battery. It is highly adivsable to fully charge the battery before using the earbuds when they have been unused for extended periods.

JBL Tune Flex takes 2 hours to fully charge the battery, more than that of Devialet Gemini 2 by 1 hours

Has Wireless Charging

JBL Tune Flex ✗

Devialet Gemini 2 ✓

The Devialet Gemini 2, the device supports wireless charging. To charge the device, you just put down on a compatible charging pad.

Has A Battery Level Indicator

JBL Tune Flex ✓

Devialet Gemini 2 ✓

Devialet Gemini 2 have a battery level indicator, an indicator notifies you when the earbuds has a low battery. Its lights display the charging status of your earbuds and case.

JBL Tune Flex too have a battery level indicator, charging indicators allow you to tell the charging state of your device, if charged fully, or having a low battery.

Has Usb Type-C

JBL Tune Flex ✓

Devialet Gemini 2 ✓

The Devialet Gemini 2 support USB TYPE-C, an industry-standard connector for transmitting both data and power through a single cable.

JBL Tune Flex too use USB TYPE-C. This USB-C plug comes along with most current laptops, phones, and tablets.

Bluetooth Version

JBL Tune Flex v5.2

Devialet Gemini 2 v5.2

The Devialet Gemini 2 have Bluetooth version of 5.2, Bluetooth is a wireless technology standard that enables data movement between devices placed in range, using short-wavelength, ultra-high frequency radio waves.

JBL Tune Flex has a Bluetooth version of 5.2, equal to that of the Devialet Gemini 2 . Newer versions provide faster data transfers.

Maximum Bluetooth Range

JBL Tune Flex 10meters

Devialet Gemini 2 10meters

Devialet Gemini 2 have a 10meters distance to connect via Bluetooth.

JBL Tune Flex have a maximum range of 10meters, equal to that of the Devialet Gemini 2

Has Aac

JBL Tune Flex ✓

Devialet Gemini 2 ✓

Devialet Gemini 2 support AAC, a codec that is used for Bluetooth audio. It supports 24-bit audio at 250kbps. Since it uses psychoacoustic modeling, it can provide better results than other codecs at a similar bit rate.

Since its the highest quality codec that any Bluetooth-supporting Apple product supports, the Devialet Gemini 2 will work well with your iPhone. If you intend on using these with Android , ensure that they also support aptX HD, LDAC, or LHDC as well.

The JBL Tune Flex support AAC as well. Designed to be the successor of the MP3 format, AAC generally achieves higher sound quality than MP3 encoders at the same bit rate.

Has Aptx Adaptive

JBL Tune Flex ✗

Devialet Gemini 2 ✓

The Devialet Gemini 2 support APTX Adaptive, an audio codec for Bluetooth devices that are developed by Qualcomm. It has a variable bit rate (between 279kbps and 420kbps).

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Number Of Microphones

JBL Tune Flex 4only

Devialet Gemini 2 4only

Devialet Gemini 2 have 4 microphones.

While the JBL Tune Flex microphones are 4, equal to that of the Devialet Gemini 2 . More microphones record better sound quality and help the earbuds to filter out background sounds.

Has A Noise-Canceling Microphone

JBL Tune Flex ✓

Devialet Gemini 2 ✓

Devialet Gemini 2 have a noise-canceling microphone, these microphones are designed to filter out background sounds from the earbuds' sound.

The JBL Tune Flex too have a noise-canceling microphone. Especially useful in noisy areas.

Mic Sensitivity

JBL Tune Flex -38dBV/Pa

Devialet Gemini 2 ✗

JBL Tune Flex microphone sensitivity is measured at -38dBV/Pa. The vastness of the analog or digital output signal from the microphone with its input stimulus is a calculation of its sensitivity. It's the 'loudness' of the voice that the microphone can recognize.

Has Ambient Sound Mode

JBL Tune Flex ✓

Devialet Gemini 2 ✓

The Devialet Gemini 2 support ambient sound mode, which uses microphones to channel ambient noises to still be heard even when wearing them

The JBL Tune Flex support ambient sound mode as well, it’s useful when you want to listen to music while being aware of what’s happening around you, say you’re having a run but would still want to hear traffic.

Has Find Earbuds Feature

JBL Tune Flex ✓

Devialet Gemini 2 ✗

When lost in a room, or can't easily find them in your bag, the JBL Tune Flex support the find earbuds feature.

Supports Fast Charging

JBL Tune Flex ✓

Devialet Gemini 2 ✓

Devialet Gemini 2 support fast charging. Usually, technologies like MediaTek’s Pump Express, are used to lower the time it takes to charge a device.

The JBL Tune Flex too support fast charging. It's very similar to regular charging, just that the battery is filling up much faster. For example, with Quick Charge 3.0, the battery can be charged to 50% in thirty minutes.

Multipoint Count

JBL Tune Flex 2only

Devialet Gemini 2 2only

The Devialet Gemini 2 support multipoint of 2 connections, this feature allows you to link to more than one Bluetooth device and switch between them. For example, you can switch calls from one device to another without having to manually disconnect and reconnect.

The JBL Tune Flex have a multipoint count of 2, equal to that of the Devialet Gemini 2 . Bluetooth multipoint comes in handy when you can be on one call and not miss notifications coming from another connected device.

Has A Mute Function

JBL Tune Flex ✓

Devialet Gemini 2 ✓

Devialet Gemini 2 have a mute function, they support the feature to mute/unmute a conversation directly from the device.

The JBL Tune Flex too have the mute function. The mute function means that you are in position turn off the earbuds' microphone, but still hear the other party's voice.

Control Panel Placed On A Device

JBL Tune Flex ✓

Devialet Gemini 2 ✓

The Devialet Gemini 2, so you can easily access the volume control, pause, play, mute, etc whichever functions are supported on the earbuds.

The JBL Tune Flex too have a control panel on them.

Has Voice Prompts

JBL Tune Flex ✓

Devialet Gemini 2 ✗

The JBL Tune Flex support voice prompts. Automatically receive information via audio messages, like if there is an issue with the connection.

Travel Bag Is Included

JBL Tune Flex ✓

Devialet Gemini 2 ✓

Devialet Gemini 2 come with a special pouch. Carrying earphones openly, or placing them in your pockets without a cover can easily put them at risk of getting damaged.

JBL Tune Flex too have a case included, which is useful for safe transportation.

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Category	Features	JBL Tune Flex	Devialet Gemini 2
DESIGN	ingress protection (ip) rating	IPX4	IPX4
	weight	9.6g	12g
	has no wires or cables	✓	✓
	sweat resistance	✓	✓
	has stereo speakers	✓	✓
SOUND QUALITY	has active noise cancellation (noise control)	✓	✓
	has passive noise reduction	✓	✓
	driver unit size	12mm	10mm
	lowest frequency	20Hz	5Hz
	highest frequency	20,000Hz	20,000Hz
	sound pressure level	108dB/mW	120dB/mW
POWER	battery life	8hours	5hours
	battery life of charging case	24hours	17hours
	charge time	2hours	1hours
	has wireless charging	✗	✓
	has a battery level indicator	✓	✓
CONNECTIVITY	has usb type-c	✓	✓
	bluetooth version	v5.2	v5.2
	maximum bluetooth range	10meters	10meters
	has aac	✓	✓
	has aptx adaptive	✗	✓
MICROPHONE	number of microphones	4only	4only
	has a noise-canceling microphone	✓	✓
	mic sensitivity	-38dBV/Pa	✗
EXTRAS	has ambient sound mode	✓	✓
	has find earbuds feature	✓	✗
	supports fast charging	✓	✓
	multipoint count	2only	2only
	has a mute function	✓	✓
	control panel placed on a device	✓	✓
	has voice prompts	✓	✗
	travel bag is included	✓	✓
		See price on Amazon	See price on Amazon

Devialet Gemini 2 Vs. Jbl Tune Flex Review

Reasons why you might like the JBL Tune Flex

Reasons why you might like the Devialet Gemini 2

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Devialet Gemini 2 Vs. Jbl Tune Flex Review In Summary

Devialet Gemini 2 Vs. Jbl Tune Flex Review In Detail

Design

Ingress Protection (Ip) Rating

Weight

Has No Wires Or Cables

Sweat Resistance

Has Stereo Speakers

Sound Quality

Has Active Noise Cancellation (Noise Control)

Has Passive Noise Reduction

Driver Unit Size

Lowest Frequency

Highest Frequency

Sound Pressure Level

Power

Battery Life

Battery Life Of Charging Case

Charge Time

Has Wireless Charging

Has A Battery Level Indicator

Connectivity

Has Usb Type-C

Bluetooth Version

Maximum Bluetooth Range

Has Aac

Has Aptx Adaptive

Microphone

Number Of Microphones

Has A Noise-Canceling Microphone

Mic Sensitivity

Extras

Has Ambient Sound Mode

Has Find Earbuds Feature

Supports Fast Charging

Multipoint Count

Has A Mute Function

Control Panel Placed On A Device

Has Voice Prompts

Travel Bag Is Included