KD44.90
T0004
HUAWEI Kirin A1
Bluetooth 5.2
A2DP 1.3
HFP 1.7
AVRCP 1.6
Charged via the charging case
Supports up to 3 C charging current. It takes around 1 hour to fully charge the earphones.
Data comes from Huawei lab tests. Tested at an ambient temperature of 25°C, with the charging coil of the charging case placed at the center of the wireless charger.
Earphone battery capacity: 30 mAh (typical value) Battery type: Lithium-ion polymer battery Weight: 1.69 g
Music playback duration:
2.5 hours (with noise canceling enabled)
4 hours (with noise canceling disabled)
Voice call duration:
2 hours (with noise canceling enabled)
3 hours (with noise canceling disabled)
*Data comes from Huawei lab tests. A prototype of the HUAWEI FreeBuds 4 and the accompanying software were tested with a HUAWEI P40 Pro running EMUI 11.0.
For details of phones running EMUI 11.0, refer to the corresponding FAQ.
Music playback test: The earphones were connected to a phone over Bluetooth. Music was then played in 256 kbps AAC format, with the volume set to 50%. The music was left playing until sound stopped playing from one of the earphones.
Voice call test: The earphones were connected to a phone over Bluetooth with the volume set to 50%. A voice call was then made, and continued until the voice could no longer be heard from one of the earphones.
The battery life will vary depending on the device settings, usage, and other factors. Tested at an ambient temperature of 25°C, with the volume set to 50
20 Hz to 20,000 Hz
AAC and SBC
1. The send/receive loudness, noise floor, frequency response, and distortion, as well as echo, comply with the calling standard TS26131-32.
2. Noise cancellation performance during calls The earphones integrate Huawei's noise canceling algorithms, giving them a reception TMOS of 3.7 or greater, and a transmission POLQA of 3.5 or greater.
14.3 mm large LCP dynamic driver unit
Triple microphones, supporting uplink noise cancellation during calls; Two of them support ANC
Ceramic White
Red
Silver Frost
Each earphone: approx. 4.1 g
(Note: Actual product weight will vary depending on the configuration and manufacturing process.)
41.4 mm x 16.8 mm x 18.55 mm
Operating temperature: 0°C to 35°C
Charging temperature: 0°C to 48 °C
Storage temperature: –20°C to 45°C
Obtained SRRC and BQB Bluetooth certificates.
Comply with the RoHS and halogen-free environmental protection requirements.
HUAWEI FreeBuds 4
The following table describes the specifications of the charging case.
T0004C (Wireless charging edition)
T0004L (Wired charging edition)
Charged via a USB-C port
A Function button is available.
1. Enter Pairing mode: Open the charging case and leave the earphones inside. Press and hold the Function button for more than 2 seconds.
2. Perform a factory reset: Open the charging case and leave the earphones inside. Press and hold the Function button for more than 10 seconds. This will clear all pairing data.
The indicator outside the case provides information about the earphones and charging case by turning red, yellow, green, or white.
1. Charging status of earphones: none
2. Battery level of earphones:
Medium: yellow/orange
Alarm: red
Sufficient: green
3. Pairing status: flashing white quickly
4. Factory reset status: flashing red quickly
5. Charging status of the case:
Charging: yellow/orange
Alarm: red
Fully charged: green
6. Battery level of the case: none
5 V/1.6 A
Wired charging: A full charge of both the charging case and earphones takes around 90 minutes. A full charge of the charging case takes around 60 minutes.
Wireless charging: A full charge of both the charging case and earphones takes around 3 hours. A full charge of the charging case takes around 2.5 hours.
*Data comes from Huawei lab tests. During testing, the temperature is 25°C, and the charging coil on the case faces the center of the wireless charger.
Fully charged earphones, with support of a fully charged case, provide 22 hours of music playback with ANC disabled, or 14 hours of music playback with ANC enabled.
When the charging case is fully charged, it can fully charge both earphones four times, or fully charge a single earphone eight times.
*Data comes from Huawei lab tests. During testing, the temperature is 25°C and the earphones are fully charged when the test starts.
Battery capacity: 410 mAh (minimum value)
Battery type: Lithium-ion polymer battery
Weight: approx. 9.5 g
Note: Actual product weight will vary depending on the configuration and manufacturing process.
Ceramic White
Red
Silver Frost
Charging case only: approx. 38 g
Note: Actual product weight will vary depending on the configuration and manufacturing process.
58 mm x 21.2 mm
Operating temperature: 0°C to 35°C
Charging temperature: 0°C to 50°C
Storage temperature: –20°C to 45°C
Obtained the CE and FCC safety certificates.
Comply with the RoHS and halogen-free environmental protection requirements.
1. Dual-channel true wireless stereo, with synchronous data transmission via both earphones
After connecting to a Bluetooth device, the earphones will play stereo sound through both channels when making voice calls or playing music. They intelligently designate one earphone as primary and the other as secondary based on their condition and battery level.
2. Hybrid ANC via dual microphones
Both the inner and outer microphones detect and eliminate ambient noise in each earphone. The dynamic driver generates reverse sound waves to cancel out noise precisely and play crystal clear sound.3. Immersive audio experience
The optimized 14.3 mm dynamic driver unit uses the LCP macromolecular composite diaphragm, which is light and slim and effectively improves the high-frequency sensitivity, reproducing full and rich audio details.
An independent, highly enclosed acoustic cavity is used at the back of the audio emitting unit, and it forms a low-frequency amplifier with a large-volume low-frequency tube connected to the outside. When the air flows in the low-frequency tube, the diaphragm's vibration to low-frequency sound is enhanced to bring surging bass.
The earphones support broadband audio transmission to reproduce the audio quality of HD calls, making the voice of the other party more natural and authentic.
4. Simultaneously connecting to two devices
You can connect the earphones to two separate devices at the same time and switch seamlessly and effortlessly between the two connected devices, such as for answering a call from your phone while watching a video on your tablet.
5. High-quality voice recording
The earphones achieve a frequency of up to 20 kHz, covering the full bands of sound sources that can be heard by humans, and managing high-quality audio recording via TWS earphones.
6. Intelligent audio broadcasts
The earphones will automatically broadcast your important schedules during music playback, video streaming, or gameplay.
7. Easy gesture controls
The shortcuts via gesture controls of the earphones can be set in the AI Life app.
8. Find My Earphones
The Find My Earphones feature records the position where either earphone was disconnected, and allows you to locate either earphone when the charging case was closed.* You can make the earphones ring aloud, helping you quickly find them if nearby.
*The Find My Earphones feature requires a Huawei phone running EMUI 11.0.
9. Wired and wireless charging of the charging case
The earphones automatically start charging when stored in the charging case. The wireless charging edition case supports both wired and wireless charging.
10. Proximity pairing prompt
Once the case has been opened for the first time, the phone will automatically detect the earphones and then quickly initiate Bluetooth pairing. The battery level of the earphones and charging case will be displayed on the connection prompts.
*The proximity pairing prompt requires a phone or table running EMUI 10.0 or later, or one of the following computer models:
CurieM-MateBook 16 (2021)
Harvey-MateBook D 16 (2021)
BohrM-MateBook D 15 (2021)
NobelM-MateBook D 14 (2021)
HengM-MateBook 13 (2021)
KelvinM-MateBook 14 (2021)
EulerD-MateBook X (2021)
11. Smart wear detection
The earphones detect when they are being worn and can automatically pause music or switch audio channels as needed (remove the earphones to pause music or switch audio to the connected device, or wear the earphones to resume music).
| Specifications | SpecificationFreebuds 4
T0004 HUAWEI Kirin A1 Bluetooth 5.2 A2DP 1.3 HFP 1.7 AVRCP 1.6 Charged via the charging case Supports up to 3 C charging current. It takes around 1 hour to fully charge the earphones. Data comes from Huawei lab tests. Tested at an ambient temperature of 25°C, with the charging coil of the charging case placed at the center of the wireless charger. Earphone battery capacity: 30 mAh (typical value) Battery type: Lithium-ion polymer battery Weight: 1.69 g Music playback duration: 2.5 hours (with noise canceling enabled) 4 hours (with noise canceling disabled) Voice call duration: 2 hours (with noise canceling enabled) 3 hours (with noise canceling disabled) *Data comes from Huawei lab tests. A prototype of the HUAWEI FreeBuds 4 and the accompanying software were tested with a HUAWEI P40 Pro running EMUI 11.0. For details of phones running EMUI 11.0, refer to the corresponding FAQ. Music playback test: The earphones were connected to a phone over Bluetooth. Music was then played in 256 kbps AAC format, with the volume set to 50%. The music was left playing until sound stopped playing from one of the earphones. Voice call test: The earphones were connected to a phone over Bluetooth with the volume set to 50%. A voice call was then made, and continued until the voice could no longer be heard from one of the earphones. The battery life will vary depending on the device settings, usage, and other factors. Tested at an ambient temperature of 25°C, with the volume set to 50%. 20 Hz to 20,000 Hz AAC and SBC 1. The send/receive loudness, noise floor, frequency response, and distortion, as well as echo, comply with the calling standard TS26131-32. 2. Noise cancellation performance during calls The earphones integrate Huawei's noise canceling algorithms, giving them a reception TMOS of 3.7 or greater, and a transmission POLQA of 3.5 or greater. 14.3 mm large LCP dynamic driver unit Triple microphones, supporting uplink noise cancellation during calls; Two of them support ANC Ceramic White Red Silver Frost Each earphone: approx. 4.1 g (Note: Actual product weight will vary depending on the configuration and manufacturing process.) 41.4 mm x 16.8 mm x 18.55 mm Operating temperature: 0°C to 35°C Charging temperature: 0°C to 48 °C Storage temperature: –20°C to 45°C Obtained SRRC and BQB Bluetooth certificates. Comply with the RoHS and halogen-free environmental protection requirements. HUAWEI FreeBuds 4 T0004C (Wireless charging edition) T0004L (Wired charging edition) Charged via a USB-C port A Function button is available. 1. Enter Pairing mode: Open the charging case and leave the earphones inside. Press and hold the Function button for more than 2 seconds. 2. Perform a factory reset: Open the charging case and leave the earphones inside. Press and hold the Function button for more than 10 seconds. This will clear all pairing data. The indicator outside the case provides information about the earphones and charging case by turning red, yellow, green, or white. 1. Charging status of earphones: none 2. Battery level of earphones: Medium: yellow/orange Alarm: red Sufficient: green 3. Pairing status: flashing white quickly 4. Factory reset status: flashing red quickly 5. Charging status of the case: Charging: yellow/orange Alarm: red Fully charged: green 6. Battery level of the case: none 5 V/1.6 A Wired charging: A full charge of both the charging case and earphones takes around 90 minutes. A full charge of the charging case takes around 60 minutes. Wireless charging: A full charge of both the charging case and earphones takes around 3 hours. A full charge of the charging case takes around 2.5 hours. *Data comes from Huawei lab tests. During testing, the temperature is 25°C, and the charging coil on the case faces the center of the wireless charger. Fully charged earphones, with support of a fully charged case, provide 22 hours of music playback with ANC disabled, or 14 hours of music playback with ANC enabled. When the charging case is fully charged, it can fully charge both earphones four times, or fully charge a single earphone eight times. *Data comes from Huawei lab tests. During testing, the temperature is 25°C and the earphones are fully charged when the test starts. Battery capacity: 410 mAh (minimum value) Battery type: Lithium-ion polymer battery Weight: approx. 9.5 g Note: Actual product weight will vary depending on the configuration and manufacturing process. Ceramic White Red Silver Frost Charging case only: approx. 38 g Note: Actual product weight will vary depending on the configuration and manufacturing process. 58 mm x 21.2 mm Operating temperature: 0°C to 35°C Charging temperature: 0°C to 50°C Storage temperature: –20°C to 45°C Obtained the CE and FCC safety certificates. Comply with the RoHS and halogen-free environmental protection requirements. 1. Dual-channel true wireless stereo, with synchronous data transmission via both earphones After connecting to a Bluetooth device, the earphones will play stereo sound through both channels when making voice calls or playing music. They intelligently designate one earphone as primary and the other as secondary based on their condition and battery level. 2. Hybrid ANC via dual microphones Both the inner and outer microphones detect and eliminate ambient noise in each earphone. The dynamic driver generates reverse sound waves to cancel out noise precisely and play crystal clear sound. 3. Immersive audio experience The optimized 14.3 mm dynamic driver unit uses the LCP macromolecular composite diaphragm, which is light and slim and effectively improves the high-frequency sensitivity, reproducing full and rich audio details. An independent, highly enclosed acoustic cavity is used at the back of the audio emitting unit, and it forms a low-frequency amplifier with a large-volume low-frequency tube connected to the outside. When the air flows in the low-frequency tube, the diaphragm's vibration to low-frequency sound is enhanced to bring surging bass. The earphones support broadband audio transmission to reproduce the audio quality of HD calls, making the voice of the other party more natural and authentic. 4. Simultaneously connecting to two devices You can connect the earphones to two separate devices at the same time and switch seamlessly and effortlessly between the two connected devices, such as for answering a call from your phone while watching a video on your tablet. 5. High-quality voice recording The earphones achieve a frequency of up to 20 kHz, covering the full bands of sound sources that can be heard by humans, and managing high-quality audio recording via TWS earphones. 6. Intelligent audio broadcasts The earphones will automatically broadcast your important schedules during music playback, video streaming, or gameplay. 7. Easy gesture controls The shortcuts via gesture controls of the earphones can be set in the AI Life app. 8. Find My Earphones The Find My Earphones feature records the position where either earphone was disconnected, and allows you to locate either earphone when the charging case was closed.* You can make the earphones ring aloud, helping you quickly find them if nearby. *The Find My Earphones feature requires a Huawei phone running EMUI 11.0. 9. Wired and wireless charging of the charging case The earphones automatically start charging when stored in the charging case. The wireless charging edition case supports both wired and wireless charging. 10. Proximity pairing prompt Once the case has been opened for the first time, the phone will automatically detect the earphones and then quickly initiate Bluetooth pairing. The battery level of the earphones and charging case will be displayed on the connection prompts. *The proximity pairing prompt requires a phone or table running EMUI 10.0 or later, or one of the following computer models: CurieM-MateBook 16 (2021) Harvey-MateBook D 16 (2021) BohrM-MateBook D 15 (2021) NobelM-MateBook D 14 (2021) HengM-MateBook 13 (2021) KelvinM-MateBook 14 (2021) EulerD-MateBook X (2021) 11. Smart wear detection The earphones detect when they are being worn and can automatically pause music or switch audio channels as needed (remove the earphones to pause music or switch audio to the connected device, or wear the earphones to resume music). |
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