Anker Soundcore P31i by Anker, Real-Time Adaptive Noise Review
The Anker Soundcore P31i packs a 50-hour battery and real-time translation into a $40 package. We found out if it's a genius all-rounder or a jack of all trades, master of none.
The 30-Second Version
The Anker Soundcore P31i is the battery life champion of the budget earbud world, with sound quality that shames its price tag. Just don't rely on it for important phone calls.
Overview
The Anker Soundcore P31i is the Swiss Army knife of budget earbuds, and that's not always a compliment. The one thing you need to know is this: for around $40, you're getting a feature set that punches way above its weight class, including best-in-class battery life and surprisingly good noise cancellation. But it tries to do everything—from Hi-Res audio to real-time translation—and while it mostly succeeds, you can feel the corners being cut in a few key areas.
Performance
What surprised us? The battery life is absolutely insane. Our database shows it's in the 100th percentile, and that's not an exaggeration. You get a legit 8 hours with ANC on, and the case pushes that to 40 hours total. That's double what you get from most competitors at this price. The sound quality is also a shocker, landing in the 99th percentile for budget buds. The 11mm drivers and LDAC support deliver a rich, detailed sound that makes you forget the price tag. The ANC, rated to block up to 52dB, is effective for the money, though it struggles a bit with constant, low-frequency rumbles compared to the big names.
Pros & Cons
Pros
- Battery life is untouchable for the price. 100th
- Sound quality is shockingly good for a $40 bud. 99th
- The real-time translation feature is a legit party trick. 96th
- Adaptive ANC works well for most daily environments. 92th
Cons
- Call quality is mediocre—the mics are the weak link. 17th
- The translation feature is cool but feels like a gimmick for most people.
- The fit can be a bit bulky for some ears.
- You're paying for features you might never use.
The Word on the Street
Specifications
Full Specifications
Design
| Form Factor | In-Ear |
| Wearing Style | Bud |
| Ear Tips | l |
| Weight | 0.1 kg / 0.1 lbs |
Audio
| Driver Type | Dynamic |
| Driver Size | 11 |
| Freq Max | 40000 |
| Impedance | 14.2 |
| Sensitivity | 120 |
| Hi-Res Audio | Yes |
| Codecs | AI Translation, Adaptive Noise Cancelling, Fast Charging, Ultra-Long Playtime |
| Surround | Spatial Audio |
Noise Control
| ANC | Yes |
| ANC Type | Adaptive |
Connectivity
| Wireless | Yes |
| Bluetooth | 6.1 |
| Wired Connector | USB Type C |
Earbud Battery
| Battery Life | 50 |
| Charge Time | 3 |
| Fast Charging | Yes |
| Charging | USB-C |
Case Battery
| Case Charging | USB-C |
Microphone
| NC Mic | Yes |
Features
| Touch Controls | Yes |
| Water Resistance | Waterproof |
Value & Pricing
At $40, the value is undeniable. You're getting battery and sound performance that matches earbuds twice the price. Even if you ignore the translation gimmick, the core audio experience is worth the money alone. It's a no-brainer for budget-focused buyers who want longevity and good sound.
vs Competition
Stacked against the competition, the P31i's choice is clear. The Nothing Ear (a) has better design and slightly clearer mics, but its battery life and ANC aren't as strong. The Sony WF-1000XM5 is in a different league for sound and ANC, but it costs over three times as much. The real fight is with the JBL Tune Flex. The JBL might have a more comfortable fit for some, but the P31i smokes it on battery life and offers more features for the same cash. If your top priorities are marathon battery and feature-packed audio on a tight budget, the P31i wins.
| Spec | Anker Soundcore P31i by Anker, Real-Time Adaptive Noise | Technics Technics EAH-AZ80 Noise-Canceling True Wireless | Sony Sony WF-1000XM5 Noise-Canceling True Wireless | Bose Bose QuietComfort Ultra True Wireless | Apple Airpods Pro 3 Apple AirPods Pro with Wireless MagSafe Charging | Jabra Jabra Evolve2 Buds USB-A UC Earbuds with USB-A |
|---|---|---|---|---|---|---|
| Form Factor | In-Ear | In-Ear | In-Ear | In-Ear | In-Ear | In-Ear |
| Driver Type | Dynamic | Dynamic | Sony WF-1000XM5 Noise-Canceling True Wireless In-Ear Headphones (Black) | Dynamic | Dynamic | Dynamic |
| Wireless | true | true | true | true | true | true |
| Active Noise Cancellation | true | true | true | true | true | true |
| Bluetooth Version | 6.1 | 5.3 | 5.3 | 5.3 | 5.3 | 5.2 |
| Battery Life Hours | 50 | 7 | 6 | 6 | 8 | 8 |
| Case Battery Hours | — | 16 | 16 | 18 | 24 | 25 |
| Water Resistance | Waterproof | IPX4 | IPX4 | IPX4 | IP57 | IP57 |
| Multipoint | — | true | true | true | true | true |
Common Questions
Q: Is the translation feature actually useful?
It's accurate for simple phrases and a great novelty, but it's too slow for a fluid conversation. Think of it as a helpful travel tool, not a replacement for learning a language.
Q: How's the fit for small ears?
They're on the bulkier side. If you have smaller ears, you might find them less comfortable for all-day wear compared to something like the Nothing Ear (a). The included tips help, but the bud itself is big.
Q: Can you use just one earbud at a time?
Yes, both earbuds support mono mode, so you can use either the left or right one independently.
Who Should Skip This
If crystal-clear call quality is your top priority, these aren't it. The microphone performance is their Achilles' heel. Go get the Nothing Ear (a) instead. Also, if you hate bulky earbuds or just want a simple, great-sounding pair without the translation gimmick, you might be happier with a more focused option.
Verdict
We're recommending the Anker Soundcore P31i, but with a specific audience in mind. If you want the longest battery life you can get under $50 and don't plan on taking many important calls, these are a fantastic buy. The sound and ANC performance are excellent for the price, making them a powerhouse for music and podcasts. Just go in knowing the microphone is the trade-off.