A breakdown of the review per specifications

Ingress Protection (Ip) Rating

Sennheiser CX 500BT IPX4

OnePlus Buds Z2 IP55

IP ratings refer to the rank of protection given by an enclosure, against solids and liquids. The letters 'IP' are followed by two values The first value of the IP rating represents protection against solids such as dust, while the second refers to resistance against liquids (water).

Scoring IP55, the OnePlus Buds Z2's rating is read as, the first value of 5 denotes that ingress of dust is not totally prevented but dust does not enter in harmful quantities to interfere with the correct operation or impair safety, and of liquids that they can withstand medium pressure jet that's 6.3mm diameter, similar to garden hose from any angle for 3 minutes at a distance of 2.5 to 3 metres.

In comparison to the OnePlus Buds Z2, Sennheiser CX 500BT have a rating of IPX4 meaning that no data available to specify a protection rating and that of liquids is that, OnePlus Buds Z2 has a higher liquid rating than Sennheiser CX 500BT

Weight

Sennheiser CX 500BT 12g

OnePlus Buds Z2 9g

The OnePlus Buds Z2 have a weight of 9g . We consider a lower weight best for the reason that lighter devices are easier to move with.

Sennheiser CX 500BT, at 12g weigh more than the OnePlus Buds Z2 by of 3g

Has No Wires Or Cables

Sennheiser CX 500BT ✓

OnePlus Buds Z2 ✓

True wireless devices have no cables linking any part of the device together, OnePlus Buds Z2 are true wireless for this case since they have no cables. This is an important difference as some wireless earbuds have wires connecting the two earbuds .

Sennheiser CX 500BT also is true wireless because it has no wires connecting the 2 earbuds .

Sweat Resistance

Sennheiser CX 500BT ✓

OnePlus Buds Z2 ✓

OnePlus Buds Z2 are resistant to sweat

Sennheiser CX 500BT's resistance to sweat makes both devices good for use during long-distance running, marathons, cardio sweat workouts , etc

Has Stereo Speakers

Sennheiser CX 500BT ✓

OnePlus Buds Z2 ✓

OnePlus Buds Z2 have stereo speakers, what this means is that OnePlus Buds Z2'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 OnePlus Buds Z2 have stereo speakers

Sennheiser CX 500BT
See price on Amazon

Has Active Noise Cancellation (Noise Control)

Sennheiser CX 500BT ✓

OnePlus Buds Z2 ✓

Active noise cancellation utilises more advanced kind of tech to reduce unwanted ambient sounds. How it works, it studies the sound pattern of incoming noise and after generates a mirror signal to counter it. Simply put, it's like having +1 (sound from your surrounding) and producing -1 (counter sound by the device) giving 0 resulting in a reduced level of noise.

OnePlus Buds Z2 have Active Noise Cancellation allowing you to listen at lower levels of volume, good for your ears since you don't need to crank up the earbuds volume to outcompete background sounds.

The Sennheiser CX 500BT too have Active Noise Cancellation which makes both devices ideal for plane rides and rush hour travels. The OnePlus Buds Z2 and Sennheiser CX 500BT operate with different noise cancellation types, pick the mode that suits your travel or that suites your chill time.

Has Passive Noise Reduction

Sennheiser CX 500BT ✓

OnePlus Buds Z2 ✓

The OnePlus Buds Z2 stay well in place, creating an acoustic seal that tones down your environment noise while preventing the earbuds sound from leaking out .

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

Driver Unit Size

Sennheiser CX 500BT ✗

OnePlus Buds Z2 11mm

OnePlus Buds Z2 driver unit is 11mm in diameter, bigger drivers are more powerful, therefor producing better bass. A driver unit is the component that produces sound in the device, its size determines the sound made by the earbuds.

Lowest Frequency

Sennheiser CX 500BT 5Hz

OnePlus Buds Z2 20Hz

The OnePlus Buds Z2's lowest frequency is at 20Hz, low-frequency response inidcates how well an audio component generates 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 Sennheiser CX 500BT can make sound with a juicier bass than the OnePlus Buds Z2

Highest Frequency

Sennheiser CX 500BT 21000Hz

OnePlus Buds Z2 20000Hz

The OnePlus Buds Z2's highest frequency is at 20000Hz, high-frequency response indicates how well an audio component generates high recognizable frequencies and if it makes any changes to the signal while at it.

Sennheiser CX 500BT's highest frequency is at 21000Hz, this means that Sennheiser CX 500BT produce a clearer and crispier treble than the OnePlus Buds Z2

Sound Pressure Level

Sennheiser CX 500BT 94dB/mW

OnePlus Buds Z2 ✗

The sound pressure level, is the pressure level of sound, measured in decibels, dB, Sennheiser CX 500BT's measurement is 94dB/mW. Devices with a higher sound pressure level are generally louder when supplied with any given audio source.

A Review By Comparison Of The Fiio Fw5 Vs. Oneplus Buds Z2

Battery Life

Sennheiser CX 500BT 8hours

OnePlus Buds Z2 7hours

The OnePlus Buds Z2's battery life is 7 hours, a device's battery life is given by the manufacturer, and with more battery hours, you get to use it for longer and have to charge the device less often.

Sennheiser CX 500BT's battery life is more than that of OnePlus Buds Z2 by 1 hours . Every time you recharge your device, they get a little less playing time. The effect is not noticeable at first, but over a few years, your wireless earbuds will no longer play for long like they used to.

Battery Life Of Charging Case

Sennheiser CX 500BT 16hours

OnePlus Buds Z2 31hours

The battery life of the charging case is given by the vendor, and OnePlus Buds Z2's case has a full charge of 31 hours. A charging case with a longer battery life allows you to recharge your earbuds on the go many times before recharging the case itself.

Sennheiser CX 500BT's charging case has a battery life of 16 hours, less than that of OnePlus Buds Z2 by 15 hours

Charge Time

Sennheiser CX 500BT ✗

OnePlus Buds Z2 1.5hours

It takes 1.5 hours to fully charge the OnePlus Buds Z2's battery. It is recommended to fully charge the battery before using the earbuds when they have been in storage for extended periods.

Battery Power

Sennheiser CX 500BT ✗

OnePlus Buds Z2 40mAh

OnePlus Buds Z2's battery capacity is 40mAh, battery capacity, shows the amount of electrical energy that a battery can keep.

Has A Battery Level Indicator

Sennheiser CX 500BT ✓

OnePlus Buds Z2 ✓

OnePlus Buds Z2 have a battery level indicator, an indicator notifies you when the device has a low battery. The battery indicator lights indicate the charging status of your device and case.

Sennheiser CX 500BT 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.

Sennheiser CX 500BT
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Has Usb Type-C

Sennheiser CX 500BT ✓

OnePlus Buds Z2 ✓

The OnePlus Buds Z2 support USB TYPE-C, an industry-standard connector for transmitting both data and power in a single cable.

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

Bluetooth Version

Sennheiser CX 500BT v5.2

OnePlus Buds Z2 v5.2

The OnePlus Buds Z2 have Bluetooth version of 5.2, Bluetooth is a wireless technology standard that enables data movement between devices placed in close proximity, using short-wavelength, ultra-high frequency radio waves.

Sennheiser CX 500BT has a Bluetooth version of 5.2, equal to that of the OnePlus Buds Z2 . Newer versions provide faster data transfers.

Maximum Bluetooth Range

Sennheiser CX 500BT 10meters

OnePlus Buds Z2 10meters

The OnePlus Buds Z2 have a 10meters distance to connect via Bluetooth.

Sennheiser CX 500BT have a maximum range of 10meters, equal to that of the OnePlus Buds Z2

Has Aac

Sennheiser CX 500BT ✓

OnePlus Buds Z2 ✓

OnePlus Buds Z2 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 OnePlus Buds Z2 will work fine with your iPhone. If you are planning 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

Sennheiser CX 500BT ✓

OnePlus Buds Z2 ✗

Sennheiser CX 500BT support APTX Adaptive, an audio codec for Bluetooth devices that are developed by Qualcomm. It has a variable bit rate (between 279kbps and 420kbps).

A Review By Comparison Of The Oneplus Buds Pro 2 Vs. Oneplus Buds Z2

Number Of Microphones

Sennheiser CX 500BT 4only

OnePlus Buds Z2 6only

OnePlus Buds Z2 have 6 microphones.

Sennheiser CX 500BT microphones are 4, less than that of OnePlus Buds Z2 by 2 . More microphones record better sound quality and help the device to filter out noise.

Has A Noise-Canceling Microphone

Sennheiser CX 500BT ✓

OnePlus Buds Z2 ✓

OnePlus Buds Z2 use a noise-canceling type of microphone, these microphones are made to filter out background sounds from the desired sound.

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

Highest Mic Frequency

Sennheiser CX 500BT 10000Hz

OnePlus Buds Z2 ✗

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

Lowest Mic Frequency

Sennheiser CX 500BT 100Hz

OnePlus Buds Z2 ✗

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

Sennheiser CX 500BT
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Has Ambient Sound Mode

Sennheiser CX 500BT ✓

OnePlus Buds Z2 ✗

Sennheiser CX 500BT support ambient sound mode, which uses microphones to channel ambient noises to still be heard even when wearing the earbuds

Has In/On-Ear Detection

Sennheiser CX 500BT ✓

OnePlus Buds Z2 ✓

OnePlus Buds Z2 have 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 too 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

Sennheiser CX 500BT ✓

OnePlus Buds Z2 ✓

When misplaced in a room, or can't be found in your bag, the OnePlus Buds Z2 support the find earbuds feature.

Sennheiser CX 500BT too have the find earbuds feature. Simply use the device app on your smartphone to play an alarm from your device to help you find them.

Supports Fast Charging

Sennheiser CX 500BT ✓

OnePlus Buds Z2 ✓

The OnePlus Buds Z2 support fast charging. Most often, technologies like Qualcomm’s Quick Charge, are used to reduce the time it takes to charge a device.

The Sennheiser CX 500BT too support fast charging. It's very similar to regular charging, just that the battery fills up much faster. Say, with Quick Charge 3.0, the battery can be charged to 50% in thirty minutes.

Has A Mute Function

Sennheiser CX 500BT ✓

OnePlus Buds Z2 ✓

The OnePlus Buds Z2 have a mute function, they have the option to mute/unmute a conversation directly from the device.

The Sennheiser CX 500BT too support the mute function. It means that you are in position turn off the device's microphone, but still hear the other party's voice.

Control Panel Placed On A Device

Sennheiser CX 500BT ✓

OnePlus Buds Z2 ✓

The OnePlus Buds Z2, so you can access the volume control, pause, play, mute, etc whichever functions are supported on the device.

The Sennheiser CX 500BT too have a control panel on them.

Warranty Period

Sennheiser CX 500BT 2Years

OnePlus Buds Z2 ✗

The Sennheiser CX 500BT 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 following instruction manuals.

Has Voice Prompts

Sennheiser CX 500BT ✓

OnePlus Buds Z2 ✓

The OnePlus Buds Z2 support voice prompts. Automatically receive information via audio messages, like if there is a problem with the connection.

Sennheiser CX 500BT also have voice prompts .i.e the earbuds will notify you when the battery is running low, and you need to recharge them.

Travel Bag Is Included

Sennheiser CX 500BT ✓

OnePlus Buds Z2 ✓

OnePlus Buds Z2 come with their own special case. Carrying earbuds openly, or placing them inside your bag without a cover may easily damage them.

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

A Review By Comparison Of The Huawei Freebuds Pro 2 Vs. Oneplus Buds Z2

Category	Features	OnePlus Buds Z2	Sennheiser CX 500BT
DESIGN	ingress protection (ip) rating	IP55	IPX4
	weight	9g	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	11mm	✗
	lowest frequency	20Hz	5Hz
	highest frequency	20000Hz	21000Hz
	sound pressure level	✗	94dB/mW
POWER	battery life	7hours	8hours
	battery life of charging case	31hours	16hours
	charge time	1.5hours	✗
	battery power	40mAh	✗
	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	6only	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
	has voice prompts	✓	✓
	travel bag is included	✓	✓
		See price on Amazon	See price on Amazon

A Review By Comparison of the Oneplus Buds Z2 Vs. Sennheiser Cx 500Bt

Reasons why you might like the Sennheiser CX 500BT

Reasons why you might like the OnePlus Buds Z2

A summary of the review by 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 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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