Review: EarFun Free Pro – High Latency Solved!

EarFun Free Pro
EarFun Free Pro

With the release of the Free Pro, EarFun has the solution to TWS high latency.

Thank you, Helen, from EarFun, for sending me the EarFun Free Pro true wireless earbuds. The products were provided to me free of charge in exchange for my honest review and opinion.

General Usage 73.9
Audiophile Usage 61.5

Score Breakdown

What We Like
  • Durable and high-quality charging case
  • Comfortable and secure fitting
  • Non-fatiguing sound
  • Sensitive and responsive control on both earbuds
  • Low latency
  • Small-ear-friendly sized earbuds
  • Comfortable fitting
What We Don't Like
  • Bleeding of lows to mids
  • Insignificant ANC
  • The microphone is unable to suppress surrounding noise during voice pick-up

Where To Buy

The EarFun Free Pro are available on:

Apply the discount code “FREEPRO20” when you checkout on both sites to enjoy 20% off from the original price of USD$59.99.


Founded in 2018, EarFun is operated by a group of experienced designers, engineers, and music enthusiasts. They aim to achieve a common goal – to create next-generation wireless audio devices to implement the latest technologies to address the bottlenecks in current-generation wireless audio devices.

EarFun believes that technology can improve modern lifestyles and flawlessly merge with our daily lives. This belief is further delivered in their slogan “Better Sound, Better Life”

The EarFun Free Pro is one of their latest releases. A few weeks ago, I reviewed the EarFun Air, which received multiple well-recognized awards, such as the CES Innovation Award and iF Design Awards in 2020. The performance of the EarFun Air is great, and I am delighted with what EarFun is offering.

Will the latest EarFun Free Pro beat the award-winning EarFun Air in terms of performance? We’ll find out more about the EarFun Pro in this article!

EarFun Free Pro
EarFun Free Pro



  • Battery Life: 21 hours with ANC on and 25 hours with ANC off
  • Connector: USB Type-C
  • Wireless Charging: Yes
  • Battery Capacity: 400 mAh

Despite having a relatively smaller form factor, the battery life of the charging case has not been compromised by EarFun. The charging case can offer users 21 hours of playback time. The playback duration is extended by not using noise cancellation.

For those who have wireless charging pads, you can simply place the charging case on the pad to charge your case. Else, connect the charging case through the USB Type-C charging port at the back of the case to charge it.

The USB Type-C charging port
The USB Type-C charging port


  • Can be open easily with one hand: Yes
  • Pass the shake test: Yes
  • Light Indicators: Display battery level

The charging case is easily opened with one hand. The earbuds are well-secured in the charging case by a magnet. There is a LED light indicator near the opening of the case, which indicates the battery level with a different LED color – green indicates the battery level is high, and red is the opposite.

The LED indicator
The LED indicator


  • Shape of the case: Rectangular
  • Material: Plastic
  • Build Quality: Good

The charging case is rectangular and made of plastic. The logo is printed on a piece of reflective plastic on the charging case’s top – giving a premium feel. The surface of the case has a slightly matte finish, providing a better grip to users. The overall build quality is above average.

The charging case of EarFun Free Pro
The charging case of EarFun Free Pro


  • Weight: 42g (With earbuds inside, 4.1g each)
  • Volume: 6.7 x 2.5 x 3.1 = 51.9cm cu (~3.2 in cu)
  • Portability: Great

The EarFun Free Pro is one of the most pocket-friendly cases of all of the true wireless earbuds that I have reviewed (including the Sennheiser MOMENTUM True Wireless 2 and Technics EAH-AZ70W). It can be easily placed in my pocket without causing an awkward protrusion. I have been bringing it with me to the gym, and I have faced no issues having it in my pocket while working out.

EarFun Free Pro (left) and Technics EAH-AZ70W (right)
EarFun Free Pro (left) and Technics EAH-AZ70W (right)



  • Battery Life: 6 hrs with ANC on, 7 hrs with ANC off
  • Charge Time (15mins): 120 mins playback time

Like the charging case, despite having a relatively smaller form factor, the earbuds’ battery life has not been compromised. With a single full charge, the earbuds can provide 6 hours of continuous playback (with ANC on). Playback time is extended to 7 hours if ANC is off.

The earbuds support fast charging too. Simply place your earbuds back into the charging case for 15 minutes, and they can continue to serve you for another two hours. To fully charge the earbuds, it only takes 40 minutes of charging time. This charge rate is one of the fastest I have seen in the market.

EarFun Free Pro is getting charged in the case
EarFun Free Pro is getting charged in the case


  • Control Mechanism: Touch
  • Touch Accuracy: Good
  • Control Symmetry on both Earbuds: Yes
  • Mono Use: Yes for both side
  • Note: Low latency mode can be triggered from the earbuds

As compared to the EarFun Air, the EarFun Free Pro have a better control interface – a touch sensor covers the whole faceplate. As long as your finger lands on the faceplate, the earbuds will register the gesture. I tried making different control gestures such as ‘triple-tap’ for ANC or ‘tap-and-hold’ for low latency mode while I ran on a treadmill. The EarFun Free Pro registered all these gestures without issues.

You can use the EarFun Free Pro in mono mode too. This feature is useful when you need to pay attention to the surroundings while using the earbuds, such as when eating in public places or even when listening to music in the office.

I particularly like the low latency mode on these earbuds. This is a useful feature for video playback and gaming. I have been using this feature for video playback when on the treadmill. The latency is almost as good as a pair of wired earbuds.

The faceplate of EarFun Free Pro
The faceplate of EarFun Free Pro


  • Profile: Low
  • Material: Plastics
  • Comfort: Good
  • Fit: Good

As mentioned, the earbuds have a relatively small form factor. They do not protrude out from my ears. To maintain the light weight, EarFun uses plastics to construct the shell. Thankfully, this does not cause it to look cheap.

Like the top of the case, a reflective plastic layer covers the faceplates, which provides a premium feel. The overall fit is comfortable, and they provide adequate sound isolation. I can use them for hours without any ear irritation.

Side view of the EarFun Free Pro earbuds
Side view of the EarFun Free Pro earbuds
EarFun Free Pro earbud is sitting well in my ear
EarFun Free Pro earbud is sitting well in my ear


  • Noise Cancellation: Bad
  • Voice Pick-up: Average

The microphone of the EarFun Free Pro is incapable of suppressing the surrounding noise during voice pick-up. The voice pick-up in cozy and quiet surroundings is only average. Once the user moves to a more crowded place, the noise from the surroundings starts to flow in, competing with the user’s voice.

Mic Demo


  • Driver: Dual composite dynamic drivers
  • Sound Signature: Balanced
  • Sub-bass: Good
  • Bass: Average
  • Mids: Average
  • Treble: Average
  • Sound Detail: Average

Active noise cancellation

The active noise cancellation of the EarFun Free Pro is not significantly strong. The difference between on and off is hardly noticeable to me. So, I usually choose to turn the ANC off to preserve battery life. There is room for improvement when EarFun designs their next true wireless earbuds with ANC.

Overall sound quality

The overall sonic profile of the EarFun Free Pro is balanced, with a slight emphasis on the bass. The detail retrieval capability and clarity are only average. Within the price range of USD$60, many manufacturers, especially Chi-Fi manufacturers, tend to emphasize bass, making their earbuds more favorable to basshead audiophiles. The EarFun Free Pro stands out from the competition by preserving clarity while emphasizing the bass.

EarFun Free Pro
EarFun Free Pro


As mentioned, EarFun put a slight emphasis on the bass while tuning the Free Pro. The sub-bass has good extension, and the quantity is sufficient to create satisfactory rumbles. The mid-bass has the same emphasis as the sub-bass, making it extend slightly towards the mids. This tendency causes some coloration due to the bass bleeding into the higher frequencies.

Are the EarFun Free Pro a pair of basshead true wireless earbuds? Not really. They don’t have enough low-end quantity or quality. I wish EarFun would have tuned the bass of the Free Pro to be more accurate to preserve the midrange transparency.

EarFun Free Pro
EarFun Free Pro


As I mentioned above, the mids exhibit some warmth and coloration due to the bleeding of bass frequencies. They are smooth to listen to but lack neutrality and transparency. More mature audiophiles will find the timbre is off because of the bleeding effect, which is particularly evident in the lower mids. As the sound moves into the upper mids, this region is free from the bass bleed effect, and they sound airy and spacious.

I find that EarFun Free Pro present female vocals very well – sweet and silky smooth.

EarFun Free Pro
EarFun Free Pro


The highs of the EarFun Free Pro are well extended, presented with sufficient air and space. The overall clarity gets preserved thanks to their good performance with high frequencies. The treble has a dynamic but well-controlled, sparkle which brings excitement to the playback. They are not fatiguing even after long hours of listening.

EarFun Free Pro
EarFun Free Pro


  • Audio Codec: SBC and AAC
  • Bluetooth Version: Bluetooth version 5.2
  • Auto-connect when: Case is opened
  • Average drop-outs in an hour: 3 – 4 times
  • Multi-point connection: No

This could be the first pair of true wireless earbuds in the market powered by Bluetooth version 5.2. I believe this is why the latency of their Bluetooth is down to around 100ms, compared to 200ms for typical true wireless earbuds.

The EarFun Free Pro supports both AAC and SBC codecs. The earbuds will auto-connect to the last paired device when opening the case. Despite using the latest Bluetooth version, the connection stability is not outstanding with the EarFun Free Pro. I experienced numerous signal drop-outs in the gym during peak hours. Similar to the majority of true wireless earbuds in the market, they do not support Bluetooth multi-point connection.


  • IP Rating: IPX5

The EarFun Free Pro is rated IPX5 for waterproofness, making them suitable for sports use. As mentioned earlier, I have been heavily using them at the gym when I work out. I have to say that they are a good companion during exercising – great comfort with a durable build.

EarFun Free Pro
EarFun Free Pro


  1. There appears to be an issue with the number rating on the article. All numbers appear to be 0. (I am on Android, don’t know if that makes a difference.) The article does not sound like it is talking about a 0/10 product on all aspects unless this is the most critical scale out of 10 possible. For example having 7 hours of battery life is higher than most earbuds I have seen even at higher price points. I would not consider that a 0/10. In addition IPX5 waterproof rating does not seem like a 0/10 rating to me. Hopefully this will help you fix the numbering, assuming you didn’t intend to give it 0 on every aspect, which would seem a bit absurd.

  2. I am a 75 year old male that uses a treadmill @ 2x a week & for @ 1 hour total each time. I have MS 365 desk top. Technology is a pain for me; are some earbuds easier/better to use than others?

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