Promise A12

The Promise A12 delivers 60 hours of battery life, good for the 79th percentile, plus a clever OTG charging trick. But sound quality is at the 29th percentile and user sentiment is at the 9th, with owners reporting Bluetooth disconnect loops and possible mic issues. At $37 it's a battery-first gamble, not a safe buy.

Battery life is the headline act and it's genuinely strong. 60 hours of playtime puts the A12 at the 79th percentile for battery in our database, which means it outlasts most neckband earbuds we've tracked. The OTG charging trick is clever too. Plug the built-in Type-C connector into your phone and you can top up without carrying a separate cable or power bank. That's a real convenience for travelers or anyone who forgets to charge things.

Everything else is a step down. Sound quality sits at the 29th percentile, which is disappointing. The 3 custom sound modes (bass, 3D balance, and vocal) are nice to have, but they can't rescue mediocre drivers. ANC is at the 31st percentile, so the noise cancelling claim is more marketing than magic. The mic situation is confusing. The listing says ENC keeps calls crystal-clear, but multiple owners report there's no microphone at all, just playback. Bluetooth 5.4 is listed in the title but the description says 5.3, and connectivity ranks at the 59th percentile. That disconnect loop owners mention? That's a connectivity problem showing up in real life.

Against the competition, the A12 has one clear win and a lot of losses. The Soundcore P31i and Sony WF-C700N both deliver better sound quality and more reliable connectivity, though they cost more. The Nothing Buds 2 and Samsung Galaxy Buds3 Pro are in a completely different league for audio and ANC, but they're also priced accordingly. The SoundPEATS H3 is probably the closest rival in the neckband category, and it beats the A12 on build quality and user sentiment. If battery life is your only priority, the A12's 60 hours is hard to beat at this price. If you care about sound, call quality, or not wanting to throw your earbuds against a wall when Bluetooth drops, look elsewhere.

At $37 USD on Amazon, the A12 is cheap. But cheap only matters if the thing works. The battery life is genuinely impressive for the price, and the OTG charging is a feature you won't find on most budget earbuds. The problem is the reliability risk. When user sentiment lands at the 9th percentile, you're gambling on whether you get a good unit or one that disconnects constantly. The INR 9,308 and MXN 886 listings are different currencies and not directly comparable, but the US price is the one most buyers will see. For $37, you're paying for battery life and hoping the rest holds up.

The Promise A12 is a neckband-style pair of wireless earbuds that leans hard into one number: 60 hours of battery life. That's a 79th percentile showing in our database, which puts it well above average for endurance. You also get a built-in Type-C OTG connector so you can sip power straight from your phone, plus a claimed 2-hour full charge. On paper, that's a lot of listening for the $37 asking price on Amazon US.

But the rest of the story is less flattering. Sound quality lands at the 29th percentile, ANC at the 31st, and build quality at the 34th. User sentiment is the real red flag here, sitting at the 9th percentile. Owners report a recurring Bluetooth disconnect loop, confusion about whether there's actually a microphone, and at least one unit dying completely within a month. The 4/5 star rating from 90 reviews looks okay until you read what people are actually saying.

Skip the A12 if you take phone calls, need reliable Bluetooth, or care about sound quality. The mic situation is murky at best, with multiple owners saying there's no microphone at all despite the listing claiming ENC. The Bluetooth disconnect loop that kicks in after audio ends would drive anyone crazy during a workday. Sound quality at the 29th percentile means music sounds flat and uninspired. And with user sentiment at the 9th percentile, you're rolling the dice on durability. One owner reported a complete failure within a month, and customer support was described as inaccessible. If any of that sounds like a dealbreaker, spend your $37 elsewhere.

The Promise A12 is a battery champ trapped in a mediocre body. 60 hours of playtime and OTG charging are genuinely useful, and the comfort is solid at the 72nd percentile. But sound quality at the 29th percentile, ANC at the 31st, and user sentiment at the 9th make this a tough recommendation. The Bluetooth disconnect loop that multiple owners report is a dealbreaker for anything beyond casual listening. If you need marathon battery life and can tolerate finicky connectivity, it's a gamble at $37. If you want reliable audio, save up for something better.