Ttbesmi K520
The 0.1oz earbuds feature a transformable heart-shaped case and a near-invisible fit specifically contoured for very small ear canals, using Bluetooth 5.3 for stable connectivity. Its IPX5 water resistance and 24-hour total battery life from the 800mAh case add practical durability to the novelty design. This product is best for young girls or women with small ears seeking a cute, low-cost accessory for casual listening and calls, not for users prioritizing music fidelity.
Snapshot
Pros & Cons
Pros
- Strong build (92nd percentile) 92nd
- Strong mic (83rd percentile) 83rd
Cons
- Below average battery (17th percentile)
- Below average comfort (28th percentile)
- Below average sound (30th percentile)
- Below average anc (32nd percentile)
What owners think
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 9 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Design
| Form Factor | in-ear |
| Wearing Style | open ear |
Audio
| Codecs | Heart Wireless Earbuds for Girls Kids, Cute Small Mini Tiny Invisible Earbuds Wireless Bluetooth for Small Ears Canals Women Rose Gold Kawai Blue Tooth Ear Buds for iPhone Android |
Connectivity
| Wireless | Yes |
| Bluetooth | 5.3 |
Earbud Battery
| Battery Life | 4 |
| Charge Time | 1.5 |
| Charging | USB-C |
Case Battery
| Case Battery | 24 |
| Case Charging | USB-C |
Microphone
| Microphone | Yes |
| Mic Count | 2 |
| NC Mic | Yes |
Features
| Water Resistance | IPX5 |
vs Competition
| Spec | Ttbesmi K520 | Technics EAH-AZ100 EAH-AZ100-N | Bose QuietComfort Ultra 896637-0010 | Sony WF-1000XM6 | Google Pixel Buds Pro | EarFun Air Pro 4+ |
|---|---|---|---|---|---|---|
| Form Factor | in-ear | in-ear | in-ear | in-ear | in-ear | in-ear |
| Driver Type | - | dynamic | dynamic | dynamic | dynamic | hybrid |
| Wireless | true | true | true | true | true | true |
| Active Noise Cancellation | - | true | true | true | true | true |
| Bluetooth Version | 5.3 | 5.3 | 5.3 | 5.3 | 5.0 | 6.0 |
| Battery Life Hours | 4 | 8 | 6 | 8 | 11 | 12 |
| Case Battery Hours | 24 | 28 | 18 | 24 | 31 | 54 |
| Water Resistance | IPX5 | IPX4 | IPX4 | IPX4 | IPX4 | IP55 |
| Multipoint | - | true | true | true | true | true |
| Compare | Compare | Compare | Compare | Compare |
| Product | Anc | Mic | Build | Sound | Battery | Comfort | User Sentiment | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|---|
| Ttbesmi K520 | 31.6 | 82.6 | 91.8 | 30 | 16.6 | 28.2 | 49.7 | 61 | 51.7 |
| Technics EAH-AZ100 EAH-AZ100-N Compare | 97.3 | 97.2 | 80.7 | 99 | 81.6 | 71.6 | 97.1 | 99.8 | 72 |
| Bose QuietComfort Ultra 896637-0010 Compare | 97.3 | 91.2 | 80.7 | 96.7 | 47.1 | 94.2 | 92 | 97.9 | 89.6 |
| Sony WF-1000XM6 Compare | 97.3 | 99.8 | 80.7 | 88.6 | 78.4 | 71.6 | 49.7 | 97.9 | 80.3 |
| Google Pixel Buds Pro Compare | 97.3 | 82.6 | 80.7 | 93.3 | 84.7 | 71.6 | 97.1 | 95.3 | 89.6 |
| EarFun Air Pro 4+ Compare | 97.3 | 97.2 | 91.8 | 99.7 | 96.1 | 71.6 | 97.1 | 99.3 | 89.6 |
Price
Value & Pricing
Amazon.com.mx 1 offer From MX$231
We started tracking prices for this product on May 30, 2026. The chart appears once we have more data.
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
