We read EarFun's listing for the Air Pro 4 on 9 October 2026 and checked its battery claims against the battery sizes it publishes. We have not listened to these earbuds.
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Research-based score out of 10. The overall score is the average of the four parts below.
- Battery figures are consistent with the cell sizes
- aptX Lossless, LDAC and LC3 support
- Wireless charging case
- Multipoint to two devices
- Lossless audio needs a compatible Android phone
- LDAC cuts battery life by about 20%
- Auracast arrives by firmware update
- Warranty shown as both 18 months and lifetime
The short answer
Consider it if
- You have an Android phone that supports aptX Adaptive, aptX Lossless or LDAC.
- You want noise cancelling, wireless charging and multipoint under $100.
- You value long battery life over the smallest case.
Skip it if
- You use an iPhone and are buying for the lossless codecs. iPhones support neither aptX nor LDAC.
- You need more water protection than IPX5 splash resistance.
- You want a warranty you can state in one sentence.
Does 52 hours add up?
EarFun claims 11 hours per charge with noise cancelling off and 52 hours in total with the case. It also publishes the battery sizes: 54 mAh in each earbud and 600 mAh in the case.
Fifty-two hours at 11 hours a charge is 4.7 charges. The buds start full, so the case has to supply about 3.7 refills. Two buds hold 108 mAh between them, so 3.7 refills need 400 mAh. The case holds 600 mAh. That leaves a third of the case's energy for charging losses, which is realistic. The claim is consistent with the hardware.
| Mode | Per charge | With case |
|---|---|---|
| ANC off | 11 h | 52 h |
| ANC on | 7.5 h | 35 h |
| ANC off, LDAC | 8.5 h | 40 h |
| ANC on, LDAC | 6 h | 28 h |
Notice the bottom two rows, which EarFun tucks into its FAQ. Turn on the high-quality LDAC codec with noise cancelling and you get 6 hours, not 11. Makers measure these figures at moderate volume, so expect a little less.
Who gets lossless audio?
The listing leads with aptX Lossless and Snapdragon Sound. Both need a phone with a matching Qualcomm chip and software. LDAC works on most recent Android phones. iPhones support neither, so on an iPhone these earbuds fall back to a standard codec and the headline feature does nothing for you.
The page uses "aptX Lossless" in one place and "aptX Adaptive lossless" in another. They refer to the same thing. Auracast and LE Audio are listed as supported, with a note that they arrive through a firmware update.
Noise cancelling and the warranty
EarFun claims noise cancelling "up to 50 dB". Figures like this are the best case at one frequency. No earbud removes 50 dB across the board, so read it as "strong for the price" and no more.
The warranty is stated two ways on the same page: an "18-Month Warranty" badge and a "Lifetime Warranty" banner. Assume 18 months unless EarFun confirms otherwise in writing. Returns are 30 days.
Key facts
As published by EarFun or the sources named above, checked on 9 Oct 2026. Prices and terms change, so confirm them before you buy.
| Drivers | 10 mm composite dynamic |
|---|---|
| Chip | Qualcomm QCC3091 |
| Bluetooth | 5.4 |
| Codecs | aptX Adaptive / Lossless, LDAC, LC3, SBC |
| Noise cancelling | Adaptive, up to 50 dB (claimed) |
| Microphones | 6 |
| Battery | 54 mAh per bud, 600 mAh case |
| Fast charge | 10 minutes for 2 hours (claimed) |
| Charging | USB-C and wireless |
| Water resistance | IPX5 |
| Multipoint | Two devices |
| Weight | 56 g with case |
| Warranty | 18 months (badge); lifetime (banner) |
| Returns | 30 days |
FAQ
Does the EarFun Air Pro 4 work with iPhone?
Yes, but iPhones do not support aptX or LDAC, so you will not get the lossless audio the listing leads with.
How long does the battery last?
EarFun claims 11 hours per charge with ANC off and 7.5 hours with it on. With LDAC and ANC together the figure drops to 6 hours.
Is it waterproof?
It is rated IPX5, which covers sweat and splashes. It is not rated for swimming.
Did you test them?
No. This review is based on EarFun's published specifications.
Verdict
The Air Pro 4's listing is one of the more honest we have read: the battery figures agree with the cell sizes, and the worse-case numbers are published even if you have to scroll for them. Android owners get a lot for $90. iPhone owners should know the codec list is not for them.
Product names and trademarks belong to their owners. This review is general information, not professional advice.