Csasan J90 Pro
Equipped with 13mm dynamic drivers, AAC codec, and Bluetooth 5.3 for fast pairing, these earbuds offer 40 hours total playback with an IP7 waterproof rating for weather and sweat resistance. The LED display on the case shows remaining battery, and four ENC mics reduce background noise for clearer calls. Best for budget-conscious listeners needing long battery life and weatherproofing for daily commutes or light workouts.
Snapshot
The 30-Second Version
The Csasan J90 Pro delivers shockingly good sound, 40-hour battery life, and IPX7 waterproofing for around $20. User sentiment is in the 97th percentile, and the mic quality is a standout. Build quality is the main compromise, but at this price, it's an easy buy.
Pros & Cons
Pros
- Ridiculous value at around $20 97th
- Clear sound with punchy bass from the 13mm driver 96th
- 40-hour total battery life with the case 92nd
- IPX7 waterproofing for workouts and rain 81st
- LED display on the case shows exact battery levels
Cons
- Build quality feels cheap
- Touch controls trigger accidentally
- ANC is fine but not premium-level
- Case takes a while to charge
What owners think
The Word on the Street
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Based on 13 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
The 13mm driver pushes out surprisingly good sound for the price. It's not audiophile territory, but our sound score lands at the 75th percentile, which means it beats a lot of earbuds costing three times more. Bass is punchy without drowning everything out. The ENC mics score in the 92nd percentile, so calls come through clear even with background noise. ANC is decent at the 82nd percentile, but it's not going to silence a subway car. Battery life is solid at 8 hours per charge, and the case adds four more charges. The weak spot is build quality, which sits near the bottom third. These feel like $20 earbuds in your hand, even if they don't sound like it.
Specifications
Full Specifications
Design
| Form Factor | in-ear |
| Wearing Style | true wireless |
| Ear Tips | S, M, L |
| Weight | 0.1 kg / 0.2 lbs |
Audio
| Driver Type | dynamic |
| Driver Size | 13 |
| Drivers | 1 |
| Hi-Res Audio | No |
| Codecs | AAC |
Noise Control
| ANC | Yes |
| ANC Type | ENC |
| Transparency | No |
Connectivity
| Wireless | Yes |
| Bluetooth | 5.3 |
| Multipoint | No |
Earbud Battery
| Battery Life | 8 |
| Charge Time | 1.5 |
| Charging | USB-C |
Case Battery
| Case Battery | 40 |
| Case Charging | USB-C |
| Wireless Charging | No |
Microphone
| Microphone | Yes |
| Mic Count | 4 |
| NC Mic | Yes |
Features
| Voice Assistant | ✓ |
| Touch Controls | Yes |
| Gaming Mode | No |
| Bone Conduction | No |
| Water Resistance | IPX7 |
vs Competition
Against the Soundcore P31i, the J90 Pro holds its own on sound and battery but loses on build quality and app support. The EarFun Air Pro 4+ beats it on ANC and overall polish, but costs significantly more. The Anker Space A40 has better noise cancellation and a more premium feel, though you'll pay triple the price. The JLab JBuds Pods ANC is a closer match on price, but the J90 Pro's mic quality and IPX7 rating give it an edge for calls and workouts. The TOZO Crystal Pods are similar in price but don't match the J90 Pro's battery life or water resistance.
| Spec | Csasan J90 Pro | Nothing Buds 2 | Soundcore P31i | Anker Space A40 | EarFun Air Pro TW230B | Baseus Bass BP1 Pro |
|---|---|---|---|---|---|---|
| Form Factor | in-ear | in-ear | in-ear | in-ear | in-ear | in-ear |
| Driver Type | dynamic | dynamic | dynamic | dynamic | dynamic | dynamic |
| Wireless | true | true | true | true | true | true |
| Active Noise Cancellation | true | true | true | true | true | true |
| Bluetooth Version | 5.3 | 5.4 | 6.0 | 5.2 | 5.4 | 6.0 |
| Battery Life Hours | 8 | 13.5 | 10 | 10 | 9.5 | 12 |
| Case Battery Hours | 40 | 55 | 50 | 50 | 40 | 55 |
| Water Resistance | IPX7 | IP55 | IP55 | IPX4 | IP55 | IP55 |
| Multipoint | false | true | - | true | true | true |
| Compare | Compare | Compare | Compare | Compare |
| Product | Anc | Mic | Build | Sound | Battery | User Sentiment | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|
| Csasan J90 Pro | 81.3 | 91.6 | 34 | 74.6 | 75.1 | 97.1 | 72.3 | 95.9 |
| Nothing Buds 2 Compare | 93.1 | 97.5 | 91.2 | 81.8 | 95.2 | 92.1 | 97.1 | 81.4 |
| Soundcore P31i Compare | 89.7 | 97.5 | 91.2 | 96.9 | 92.5 | 97.1 | 86.5 | 90.2 |
| Anker Space A40 Compare | 97.3 | 97.5 | 79.4 | 94.3 | 92.5 | 80.8 | 97.4 | 73 |
| EarFun Air Pro TW230B Compare | 89.7 | 97.5 | 91.2 | 89.2 | 85.5 | 97.1 | 93.4 | 90.2 |
| Baseus Bass BP1 Pro Compare | 97.3 | 97.5 | 91.2 | 88.8 | 94.7 | 92.1 | 98.7 | 90.2 |
Price
Value & Pricing
At $19 to $20, these are an absolute steal. You're getting features that usually cost $80 to $100: ANC, ENC mics, wireless charging case with LED display, IPX7 rating. The user sentiment score of 92/100 confirms people feel like they got way more than they paid for. If you're on a tight budget and want earbuds that just work, this is one of the easiest recommendations we can make.
Amazon 2 offers From $19
Price History
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Overview
The Csasan J90 Pro is one of those budget earbuds that makes you wonder why you'd ever spend $200 on the big brands. For around $20, you get a 13mm dynamic driver, Bluetooth 5.3, ENC mics, and a charging case with an actual LED battery display. That's a lot of hardware for the price of a pizza.
Our database puts user sentiment for these at the 97th percentile, which is wild. People genuinely love them. The sound is clear with decent bass, battery life stretches to 40 hours with the case, and the IPX7 rating means sweat and rain won't kill them. The catch? Build quality sits at the 34th percentile, so don't expect a premium feel.
Common Questions
Q: Are these earbuds good for working out?
Yes. The IPX7 rating means they can handle sweat and rain without issues, and the secure fit with three ear tip sizes keeps them in place during runs or gym sessions.
Q: How long does the battery actually last?
You get about 8 hours from the earbuds themselves, and the charging case adds four more full charges for roughly 40 hours total. The LED display on the case shows exactly how much juice is left.
Q: Do these work with iPhone and Android?
Yes. They use standard Bluetooth 5.3, so they pair with any Bluetooth-enabled phone, tablet, or laptop. The AAC codec means you'll get solid audio quality on both iOS and Android.
Who Should Skip This
Skip these if you need strong ANC for flights or noisy offices. The noise cancellation is decent but won't compete with Sony or Bose. Also skip if you're rough on your gear, the build quality is the weakest link here, and these probably won't survive being sat on or dropped repeatedly. If you want app support for EQ tweaks or firmware updates, look at Soundcore or EarFun instead.
Verdict
If you want cheap earbuds that sound good, survive sweat, and last all day, the Csasan J90 Pro is a no-brainer. They're perfect for gym sessions, commutes, and casual listening. Just don't expect a premium build or flagship-grade ANC. For $20, you're getting 80% of what $150 earbuds offer, and that's a trade most people will happily make.