XIAOWTEK S66
A 50-hour total battery life with a dual LED display on the case and Bluetooth 5.4 connectivity sets this budget earbud apart for sheer endurance and stable transmission. Its 13.4mm graphene diaphragm driver and dual-mic ENC for 85% noise reduction deliver clear calls, while the IPX7 rating and 4-gram lightweight build add practical durability. These are best for commuters and casual listeners who prioritize marathon playback and a waterproof design over nuanced audio fidelity.
Snapshot
Pros & Cons
Pros
- Strong user sentiment (92nd percentile) 92nd
- Strong battery (92nd percentile) 92nd
- Strong social proof (90th percentile) 90th
- Strong anc (87th percentile) 87th
Cons
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 13 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 | true wireless |
| Ear Tips | l |
| Weight | 0.1 kg / 0.2 lbs |
Audio
| Driver Type | dynamic |
| Driver Size | 13.4 |
| Codecs | Wireless Earbuds, Bluetooth 5.4 Headphones with 50H Playback, Deep Bass Stereo Ear Buds Clear Calls with LED Power Display, Light Green |
Noise Control
| ANC | Yes |
| ANC Type | hybrid |
Connectivity
| Wireless | Yes |
| Bluetooth | 5.4 |
| Wired Connector | Bluetooth |
Earbud Battery
| Battery Life | 8 |
| Fast Charging | Yes |
Case Battery
| Case Battery | 50 |
Microphone
| Microphone | Yes |
| Mic Count | 2 |
| NC Mic | Yes |
Features
| Touch Controls | Yes |
| Water Resistance | IPX7 |
vs Competition
| Spec | XIAOWTEK S66 | Technics EAH-AZ100 EAH-AZ100-K | Sony WF-1000XM6 | Samsung Galaxy Buds3 Pro | Bose QuietComfort Ultra 896637-0010 | Apple AirPods Pro 3 |
|---|---|---|---|---|---|---|
| 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 | 5.4 | 5.3 | 5.3 | 5.4 | 5.3 | 5.3 |
| Battery Life Hours | 8 | 8 | 8 | 6 | 6 | 8 |
| Case Battery Hours | 50 | 28 | 24 | 26 | 18 | 24 |
| Water Resistance | IPX7 | IPX4 | IPX4 | IP57 | IPX4 | IP57 |
| Multipoint | - | true | true | true | true | true |
| Compare | Compare | Compare | Compare | Compare |
| Product | Anc | Mic | Build | Sound | Battery | Comfort | User Sentiment | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|---|
| XIAOWTEK S66 | 86.6 | 83.9 | 35 | 64.4 | 91.6 | 73.8 | 92.1 | 79.8 | 90.3 |
| Technics EAH-AZ100 EAH-AZ100-K Compare | 97.4 | 97.5 | 81.4 | 99.1 | 82 | 73.8 | 92.1 | 99.2 | 81.4 |
| Sony WF-1000XM6 Compare | 97.4 | 99.8 | 81.4 | 89.2 | 79.2 | 73.8 | 80.1 | 99.2 | 81.4 |
| Samsung Galaxy Buds3 Pro Compare | 97.4 | 97.5 | 98.9 | 93.5 | 76.9 | 94.7 | 80.1 | 99.7 | 90.3 |
| Bose QuietComfort Ultra 896637-0010 Compare | 97.4 | 91.9 | 81.4 | 97 | 48.8 | 94.7 | 92.1 | 98.1 | 90.3 |
| Apple AirPods Pro 3 Compare | 97.4 | 83.9 | 98.9 | 91.5 | 79.2 | 94.7 | 31.6 | 99.7 | 99.4 |
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
