Geeknewz comparison built from Anker's own Sleep Earbuds 4 vs 4 Pro guide, the Soundcore sleep earbuds page, the Sleep A30 product page, and launch reporting from The Verge, Gadgets & Wearables, and Digital Trends. We have not tested either new model.
Anker's Soundcore Sleep Earbuds 4 are due this month at $229.99, with the Sleep Earbuds 4 Pro following in November at $349.99. Most launch coverage treated the Pro as the obvious "better" pair because it has a heart-rate sensor and a touchscreen case. When you lay Anker's own spec pages side by side, though, the picture gets more interesting. The cheaper model keeps a safety feature the Pro drops, and one battery figure actually went backwards compared with last year's Sleep A30.
So before you put down the $1 pre-launch deposit Anker is offering, here is how the three pairs really line up and what the extra $120 buys you.
The three pairs side by side
| Spec (Anker's figures) | Sleep A30 (2025) | Sleep Earbuds 4 | Sleep Earbuds 4 Pro |
|---|---|---|---|
| US price | $229.99 at launch, $199.99 now | $229.99 (October) | $349.99 (November) |
| Bluetooth streaming, ANC on | 6.5 to 7 hours | 8 hours | 8 hours |
| Bluetooth streaming, ANC off | 10 hours | 11 hours | 11 hours |
| Local soundscapes, ANC on | 8.5 to 9 hours | 9.5 hours | 9.5 hours |
| Local soundscapes, ANC off | 14 to 16 hours | 14.5 hours | 14.5 hours |
| Bluetooth version | 5.4 | 6.0 | 6.0 |
| Wireless charging case | No | Yes | Yes |
| Baby cry and fire alarm detection | No | Yes (case listens, buds switch to transparency) | No |
| In-ear heart sensor | No | No | 100 Hz PPG (heart rate, HRV, sleep stages) |
| Case screen and local storage | No | No | AMOLED touchscreen, onboard audio storage |
| Weight per bud | About 3 g | About 3 g | About 3 g |
A note on the A30 column: Anker's own A30 pages don't agree with each other. The current US and UK listings quote 7, 9, and 16 hours for the three main modes, while the Canadian page lists 6.5, 8.5, and 14. We show both ends as a range rather than picking the friendlier number.
What the battery math actually says
The headline upgrade is all-night streaming with noise cancelling on. Going from the A30's 6.5 to 7 hours up to 8 hours is a gain of 1 to 1.5 hours, or roughly 14 to 23 percent. That matters because 8 hours is the line where a full night of ANC stops being a gamble. The ANC-off modes tell a less tidy story. Bluetooth playback gains an hour (10 to 11), but local soundscape playback with ANC off lands at 14.5 hours, which is below the 16 hours Anker now quotes for the A30. If you are someone who runs white noise all night without ANC, the new buds are not a battery upgrade for you.
There is also a reason to be cautious about any of these numbers. When SoundGuys tested the A30, it measured 7 hours 33 minutes against Anker's 9-hour claim, about 84 percent of the rated figure. If the new buds fell short by a similar margin, which is purely an assumption until someone tests them, 8 hours of ANC streaming would work out to roughly 6 hours 45 minutes. That is still better than the A30, just not the clean full-night guarantee the spec sheet implies.
What the extra $120 buys, and what it costs you
The Pro costs $120 more than the standard pair, which is about 52 percent extra. Spread across two years of nightly use, the standard model works out to roughly 31.5 cents a night ($229.99 over 730 nights) and the Pro to about 48 cents, so the sensor and screen cost you an extra 16 cents or so per night. Anker's $1 deposit offer takes $30 off either model, which brings them to $199.99 and $319.99 but leaves the $120 gap exactly where it was.
For that money you get an in-ear PPG sensor sampling at 100 Hz, which Anker says tracks heart rate, HRV changes, sleep stages, and breathing-related patterns, then turns them into a Sleep Score and a "Body Battery" morning report. You also get a case with an AMOLED touchscreen and local storage, so you can change soundscapes, set an alarm, and read that report without touching your phone. The experimental BioSync feature checks your relaxation about every five minutes and adjusts tempo and soundscape elements to match. Anker's comparison page also lists the Pro's ANC at 30 dB, while the standard model is described as improving on the A30 by 3 to 5 dB in both the low-frequency and voice ranges.
What you give up is the part most launch stories skipped. On the standard Sleep Earbuds 4, the charging case uses on-device sound recognition to spot a baby crying or a fire alarm, then lowers the masking audio and flips the buds into transparency mode. Anker's own comparison page says plainly that the Pro does not offer that awareness feature. For new parents, people who live alone, or anyone who worries about sleeping through an alarm, that is not a minor footnote. Anker also states that the Pro is not a medical device and cannot diagnose sleep apnea, so the sleep data is a habit tracker rather than a health tool.
Our take on who should buy which
This is Geeknewz's opinion, not a test result. The standard Sleep Earbuds 4 look like the sensible pick for most side sleepers who mainly want to stop hearing a snoring partner. They fix the A30's two biggest complaints (short ANC battery and no wireless charging), and they keep the fire alarm and baby cry alerts. If you already own an A30 and mostly sleep with ANC off, you can skip this generation, since that mode didn't get better.
The Pro makes sense if you want overnight heart and sleep-stage data and don't already wear a smartwatch or ring to bed, or if keeping your phone out of the bedroom is the whole point. If you already track sleep with a wearable, you would be paying $120 mostly for a screen and for losing the alarm detection. Either way, wait for independent battery tests before trusting the 8-hour figure, because the last generation came up short in testing.