Sennheiser CX 7.00BT Specifications, Tests and Review

Headphone type
In-ear
Connectivity
Wireless
Frequency Response
17 - 21000 Hz
Microphone
On-cable

Complete technical specifications, details, expert ratings and review of Sennheiser CX 7.00BT. Find out how your chosen headphones stack up against the competition and whether they are the ones that best meet your expectations with the headphone comparison feature.

Sennheiser CX 7.00BT Full Specifications and Details

design and dimensions sound quality microphone cable battery and charging others

DESIGN AND DIMENSIONS Sennheiser CX 7.00BT
Product Type Earphones - Bluetooth - wireless - NFC
Colour Black
Recommended Use Portable electronics

​​The Sennheiser CX 7.00BT are wireless headphones. The wireless connection allows absolute freedom of movement and with that increases the comfort of using the headphones. This feature is very popular, especially when using headphones every day. The limiting factor of wireless headphones is a certain delay in the sound transmission between the source and the headphones (almost indistinguishable for a normal user), as well as the need to charge them (in the case of wired headphones, the headphones are recharged by connecting the cable itself). The technology used for the sound transmission used by the headphones is Bluetooth 4.1.

The headphones are designed as in-ear. In-ear headphones are plugged directly into the ear and they normally offer complete or at least partial isolation from surrounding noise. The degree of isolation also depends on whether the headphones have an ambient noise isolation function. Their indisputable advantage is that they are more compact than over-the-head headphones.

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SOUND QUALITY Sennheiser CX 7.00BT
Headphones Form Factor In-ear
Headphones Technology Dynamic
Connectivity Technology Wireless
Wireless Technology Bluetooth
Bluetooth Version Bluetooth 4.1 Better than 58 % of in-ear headphones rated.
Bluetooth Profiles Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP)
Sound Output Mode Stereo
Frequency Response 17 - 21000 Hz Better than 64 % of in-ear headphones rated.
Total Harmonic Distortion (THD) 0.5% Better than 68 % of in-ear headphones rated.
Max Sound Pressure 112 dB

The sound quality can be affected by many factors. When it comes to frequency range, the wider it is, the more detail you will hear when listening. However, the range a person can perceive is highly individual. The average person is able to perceive frequencies in the range of 16 to 20 000 Hz. So the most common frequency range you will see on the market is 20 to 20,000 Hz. Lower frequencies up to approximately 256 Hz are considered bass frequencies. Therefore, the lower the bottom value is, the better the headphones will reproduce bass. Conversely, values from approximately 2 048 Hz upwards are treble. That is why headphones with a high upper value will provide a much more accurate reproduction of high notes. Sennheiser CX 7.00BT offers a frequency range of 17 - 21000 Hz. Overall, these headphones can reproduce sound up to 112 dB. However, be careful. Repeatedly playing music continuously at really high volumes can damage your hearing. Total harmonic distortion is one of the parameters you will come across and usually includes the average value of the distortion when reproducing all frequency bands. This parameter is not critical when choosing headphones, but it is important to remember that higher harmonic distortion can negatively affect sound quality. In case of these headphones, the total harmonic distortion is Audio Output | Total Harmonic Distortion.

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MICROPHONE Sennheiser CX 7.00BT
Type On-cable
Microphone Operation Mode Omni-directional
Sensitivity -44 dBV/Pascal

The Sennheiser CX 7.00BT has a microphone built directly on the cable. The microphone sensitivity is -44 dBV/Pascal. A lower microphone sensitivity will generally ensure that even quieter sounds are caught. On the other hand, in noisier environments, distortion of the recording may occur. With a higher sensitivity, the microphone will not distort the recording even in noisy environments. On the other hand, the microphone will not pick up quieter sounds. So it depends on the environment and the purposes you plan to use the headphones for.

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CABLE Sennheiser CX 7.00BT
Cable Type USB charge cable
BATTERY AND CHARGING Sennheiser CX 7.00BT
Battery Type Headphone battery rechargeable - Lithium Ion
Battery Capacity 170 mAh Better than 89 % of in-ear headphones rated.
Battery Life 10 hour(s) Better than 86 % of in-ear headphones rated.
Charging Time 1.5 hour(s) Better than 88 % of in-ear headphones rated.

These headphones have a battery capacity of 170 mAh. In terms of headphone battery life as a significant factor in the purchase decision, it depends on what you want to use the headphones for and potentially how often you will be able to recharge them. Headphones with up to a few hours of battery life are more suitable for home use as they will require more frequent charging. Headphones with a battery life of around 10 hours or more are already more suitable for commuting and shorter journeys. However, nowadays you can also find headphones on the market that have a battery life in the higher tens to hundreds of hours. In this case, you do not have to worry about your headphones simply running out of power on longer journeys, and you will not have to deal with constant recharging. The battery life of the Sennheiser CX 7.00BT reaches up to 10 hour(s).

Charging time is 1.5 hour(s).

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OTHERS Sennheiser CX 7.00BT
Included Accessories Carrying pouch, 4 ear tips (extra small, small, medium, large)

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