A breakdown of the review per specifications

Ingress Protection (Ip) Rating

Devialet Gemini IPX4

Sennheiser CX 500BT IPX4

IP ratings is the level of protection given by an enclosure, against solids and water. In the format of IPXX, 'X' represents a number The first value of the IP rating refers to protection against solids say dust, while the second refers to resistance against liquids (sweat).

Scoring IPX4, the Devialet Gemini's rating is read as, the first number of X denotes that no data available to specify a protection rating, and the second number 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, Sennheiser CX 500BT 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

Devialet Gemini 8g

Sennheiser CX 500BT 12g

The Devialet Gemini have a weight of 8g . We take in account a lower weight best because lighter devices are easier to transport.

Sennheiser CX 500BT, at 12g weigh more than the Devialet Gemini by of 4g

Has No Wires Or Cables

Devialet Gemini ✓

Sennheiser CX 500BT ✓

True wireless devices have no wires linking any part of the device together, Devialet Gemini are true wireless for this case since they have no cables. This is a major distinction as some wireless earbuds have cables linking the pair of earbuds .

Sennheiser CX 500BT also is true wireless because it doesn't have cables connecting the pair of earbuds together.

Sweat Resistance

Devialet Gemini ✓

Sennheiser CX 500BT ✓

Devialet Gemini have sweat resistance

Sennheiser CX 500BT'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

Devialet Gemini ✓

Sennheiser CX 500BT ✓

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

Both Sennheiser CX 500BT and Devialet Gemini have stereo speakers

Devialet Gemini
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Has Active Noise Cancellation (Noise Control)

Devialet Gemini ✓

Sennheiser CX 500BT ✓

ANC uses advanced technology to reduce ambient sounds. ANC works when, it studies 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) and producing -1 (inverted noise) giving 0 thus "diluting" the noise.

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

Sennheiser CX 500BT too have Active Noise Cancellation which makes either of the earbuds ideal for plane rides and rush hour commutes. Each operate with different noise cancellation types, pick the setting that suits your travel or that suites your relaxation time.

Has Passive Noise Reduction

Devialet Gemini ✓

Sennheiser CX 500BT ✓

Devialet Gemini stay well in place, creating a sound seal that reduces your environment noise while preventing the earbuds music from leaking out at the same.

Both of these devices have passive noise reduction which implies that both limit ambient noise instead of actively using technology to cancel it out.

Driver Unit Size

Devialet Gemini 10mm

Sennheiser CX 500BT ✗

Devialet Gemini driver unit is 10mm in diameter, bigger drivers are more powerful, therefor producing better bass. A driver unit is basically a mini speaker that produces sound in the earbuds, the unit size determines the sound produced by the earbuds.

Lowest Frequency

Devialet Gemini 5Hz

Sennheiser CX 500BT 5Hz

Devialet Gemini's lowest frequency is at 5Hz, low-frequency response inidcates how well an audio component produces low frequencies that can be heard, and if it alters the signal while at it.

Sennheiser CX 500BT's lowest frequency is at 5Hz, this means that both devices can produce equal bass

Highest Frequency

Devialet Gemini 20000Hz

Sennheiser CX 500BT 21000Hz

Devialet Gemini's highest frequency is at 20000Hz, high-frequency response measures if and how well a particular audio component makes high human frequencies and if it makes any adjustments to the signal on its way through.

Sennheiser CX 500BT's highest frequency is at 21000Hz, this means that Sennheiser CX 500BT can produce a clearer and crispier treble than the Devialet Gemini

Sound Pressure Level

Devialet Gemini 94dB/mW

Sennheiser CX 500BT 94dB/mW

The sound pressure level, is the pressure level of sound, in decibels, dB, Devialet Gemini's measurement is 94dB/mW. Devices with a higher sound pressure level are generally louder when supplied with any given audio source.

Sennheiser CX 500BT's sound pressure level measurement is 94dB/mW. How loud a device is can be considered differently by separate people, so we need to have the means to get a standard measurement of sound level expressed in numerical terms.

A Review By Comparison Of The Technics Eah Az60M2 Vs. Devialet Gemini

Battery Life

Devialet Gemini 6hours

Sennheiser CX 500BT 8hours

The Devialet Gemini's battery life is 6 hours, these last longer than 5 hours of listening which is considered average before recharge. A device's battery life is given by the manufacturer, and with longer battery life, you get to use it for longer and requires fewer chargings.

Sennheiser CX 500BT's battery life is more than that of Devialet Gemini by 2 hours . Every time you recharge your earbuds, they get a little less playing time. The effect is not noticeable at first, but over time, your wireless earbuds will no longer play for long like they used to.

Battery Life Of Charging Case

Devialet Gemini 18hours

Sennheiser CX 500BT 16hours

This is given by the vendor, and the Devialet Gemini's case has a charge of 18 hours. A charging case with more battery hours allows you to recharge your earbuds on the go multiple times before having to recharge the case itself.

Sennheiser CX 500BT's charging case has a battery life of 16 hours, less than that of Devialet Gemini by 2 hours

Charge Time

Devialet Gemini 1.5hours

Sennheiser CX 500BT ✗

It requires 1.5 hours to fully charge the Devialet Gemini's battery. It is highly adivsable to fully charge the battery before using the earbuds when they have been unused for extended periods.

Battery Power

Devialet Gemini 55mAh

Sennheiser CX 500BT ✗

Devialet Gemini's battery capacity is 55mAh, battery capacity, represents the amount of electrical energy that a battery can keep.

Has Wireless Charging

Devialet Gemini ✓

Sennheiser CX 500BT ✗

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

Has A Battery Level Indicator

Devialet Gemini ✓

Sennheiser CX 500BT ✓

The Devialet Gemini have a battery level indicator, an indicator alerts you when the earbuds has a low battery. The battery indicator lights indicate the charging state of your device and charging case.

Sennheiser CX 500BT too have a battery level indicator, charging indicators allow you to tell the charging state of your earbuds, if charged fully, or having a low battery.

Devialet Gemini
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Has Usb Type-C

Devialet Gemini ✓

Sennheiser CX 500BT ✓

Devialet Gemini use USB TYPE-C, a standard connector for transmitting both data and power through a single cable.

Sennheiser CX 500BT too have USB TYPE-C. This USB-C plug is part and parcel of most current electronics.

Bluetooth Version

Devialet Gemini v5

Sennheiser CX 500BT v5.2

Devialet Gemini have Bluetooth version of 5, Bluetooth is a wireless technology standard that enables data transfers between devices placed in range, using short-wavelength, ultra-high frequency radio waves.

Sennheiser CX 500BT has a Bluetooth version of 5.2, newer than that of Devialet Gemini . Newer versions provide faster data transfers.

Maximum Bluetooth Range

Devialet Gemini 10meters

Sennheiser CX 500BT 10meters

The Devialet Gemini have a 10meters distance connecting via Bluetooth.

Sennheiser CX 500BT have a maximum range of 10meters, equal to that of the Devialet Gemini

Has Aac

Devialet Gemini ✓

Sennheiser CX 500BT ✓

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

Since its the highest quality codec that any Bluetooth-supporting Apple product supports, the Devialet Gemini will work fine with your MacBook. If you intend on using these with Android you need to pay even closer attention to codec support for if they only have AAC they won't provide the best audio quality possible, ensure that they also support aptX HD, LDAC, or LHDC as well.

The Sennheiser CX 500BT 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

Devialet Gemini ✓

Sennheiser CX 500BT ✓

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

Sennheiser CX 500BT support APTX Adaptive as well which implies that both can adjust the bit rate for different scenarios, such as reducing interference from other devices.

A Review By Comparison Of The Technics Eah Az60M2 Vs. Devialet Gemini

Number Of Microphones

Devialet Gemini 2only

Sennheiser CX 500BT 4only

The Devialet Gemini have 2 microphones.

The Sennheiser CX 500BT microphones are 4, more than that of Devialet Gemini by 2 . More microphones record better sound quality and help the device to filter out noise.

Has A Noise-Canceling Microphone

Devialet Gemini ✓

Sennheiser CX 500BT ✓

Devialet Gemini use a noise-canceling type of microphone, these microphones are intended to reduce background sounds from the earbuds' sound.

The Sennheiser CX 500BT too have a noise-canceling type of microphone. Especially useful in noisy areas.

Highest Mic Frequency

Devialet Gemini ✗

Sennheiser CX 500BT 10000Hz

Sennheiser CX 500BT's highest mic frequency is 10000Hz, high frequencies are best for recording treble. The highest mic frequency of a microphone is defined as its upper limiting frequency.

Lowest Mic Frequency

Devialet Gemini ✗

Sennheiser CX 500BT 100Hz

Sennheiser CX 500BT's lowest mic frequency is 100Hz, low frequencies are best for picking up bass. The lowest mic frequency of a microphone is defined as its lower limiting frequency.

Devialet Gemini
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Has Ambient Sound Mode

Devialet Gemini ✓

Sennheiser CX 500BT ✓

The Devialet Gemini support ambient sound mode, which uses microphones to pass through ambient noises to still be heard even when wearing the earbuds

The Sennheiser CX 500BT support ambient sound mode as well, helpful when you want to listen to music while being aware of your surrounding, say you’re having a jog but still want to hear traffic.

Has In/On-Ear Detection

Devialet Gemini ✓

Sennheiser CX 500BT ✓

The Devialet Gemini support in/on-ear detection, the sensors in the device can detect when removed from your ears so that the music is paused.

Sennheiser CX 500BT support in/on-ear detection, automatically pauses your music, or audiobook when you remove earbuds from your ears improving your listening experience.

Has Find Earbuds Feature

Devialet Gemini ✓

Sennheiser CX 500BT ✓

If misplaced in a room, or can't easily find them in your bag, the Devialet Gemini have a find earbuds feature.

Sennheiser CX 500BT too have the find earbuds feature. You can use the earbuds app on your phone to play a sound from your device to help you find them.

Supports Fast Charging

Devialet Gemini ✓

Sennheiser CX 500BT ✓

The Devialet Gemini support fast charging. Usually, technologies like Qualcomm’s Quick Charge, are used to lower the time it takes to fully charge the earbuds.

The Sennheiser CX 500BT support fast charging. This kind is similar to regular charging, only that the battery fills up much faster. Say, with Quick Charge 3.0, the battery is charged to 50% in just 30 minutes.

Has A Mute Function

Devialet Gemini ✗

Sennheiser CX 500BT ✓

Sennheiser CX 500BT have a mute function, they have the feature to mute/unmute a conversation directly from the earbuds.

Control Panel Placed On A Device

Devialet Gemini ✓

Sennheiser CX 500BT ✓

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

Sennheiser CX 500BT also have a control panel on them.

Warranty Period

Devialet Gemini 2Years

Sennheiser CX 500BT 2Years

Devialet Gemini have a warranty period of 2 Years, the period of time that warrant free repair and adjustment services in case of a malfunction occurring under normal use that has followed instruction manuals.

When covered under the manufacturer’s warranty it is possible to get a replacement a malfunction occurs. Sennheiser CX 500BT have a warranty period of 2Years, equal to that of the Devialet Gemini .

Has Voice Prompts

Devialet Gemini ✓

Sennheiser CX 500BT ✓

Devialet Gemini have voice prompts. Automatically receive information through audio messages, like if there is a problem with the connection.

Sennheiser CX 500BT also support voice prompts meaning the device notifies you if the battery is running low, and it's time to recharge them.

Travel Bag Is Included

Devialet Gemini ✓

Sennheiser CX 500BT ✓

Devialet Gemini come with a special pouch. Carrying earbuds openly, or placing them in your bag without a cover may easily damage them.

Sennheiser CX 500BT also have a case included, which is useful for safe transportation.

A Review By Comparison Of The Echo Buds 3Rd Generation Vs. Devialet Gemini

Category	Features	Devialet Gemini	Sennheiser CX 500BT
DESIGN	ingress protection (ip) rating	IPX4	IPX4
	weight	8g	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	10mm	✗
	lowest frequency	5Hz	5Hz
	highest frequency	20000Hz	21000Hz
	sound pressure level	94dB/mW	94dB/mW
POWER	battery life	6hours	8hours
	battery life of charging case	18hours	16hours
	charge time	1.5hours	✗
	battery power	55mAh	✗
	has wireless charging	✓	✗
	has a battery level indicator	✓	✓
CONNECTIVITY	has usb type-c	✓	✓
	bluetooth version	v5	v5.2
	maximum bluetooth range	10meters	10meters
	has aac	✓	✓
	has aptx adaptive	✓	✓
MICROPHONE	number of microphones	2only	4only
	has a noise-canceling microphone	✓	✓
	highest mic frequency	✗	10000Hz
	lowest mic frequency	✗	100Hz
EXTRAS	has ambient sound mode	✓	✓
	has in/on-ear detection	✓	✓
	has find earbuds feature	✓	✓
	supports fast charging	✓	✓
	has a mute function	✗	✓
	control panel placed on a device	✓	✓
	warranty period	2Years	2Years
	has voice prompts	✓	✓
	travel bag is included	✓	✓
		See price on Amazon	See price on Amazon

A Review By Comparison of the Devialet Gemini Vs. Sennheiser Cx 500Bt

Reasons why you might like the Devialet Gemini

Reasons why you might like the Sennheiser CX 500BT

A summary of the review by feature comparison

A breakdown of the review per specifications

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

Battery Power

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

Highest Mic Frequency

Lowest Mic Frequency

Extras

Has Ambient Sound Mode

Has In/On-Ear Detection

Has Find Earbuds Feature

Supports Fast Charging

Has A Mute Function

Control Panel Placed On A Device

Warranty Period

Has Voice Prompts

Travel Bag Is Included

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