Price drop 11%
S66
The 6.5-foot cord provides extended reach for stationary use, while the built-in volume control allows direct audio adjustment without touching the source device. Interchangeable ear tips and a lightweight 41g build prioritize a comfortable fit for prolonged wear. These are best for TV viewers or tablet users who need a simple, wired audio solution without a microphone.
form factor in-ear
22 Overall Score
Price ¥4,924
Snapshot
Pros & Cons
Pros
- Strong comfort (72nd percentile) 72nd
Cons
- Below average connectivity (14th percentile)
- Below average mic (14th 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.
78/100Our AI sentiment read
The proof
Performance
Specifications
Full Specifications
Design
| Form Factor | in-ear |
| Weight | 0.0 kg / 0.1 lbs |
Audio
| Hi-Res Audio | No |
Noise Control
| ANC | No |
| Transparency | No |
Connectivity
| Wireless | No |
Microphone
| Microphone | No |
vs Competition
| Spec | S66 | Technics EAH-AZ100 EAH-AZ100-S | Sony WF-C700N WFC700N/B | Bose QuietComfort Ultra 896637-0020 | JBL Live Beam JBLLIVEBEAM3SILAM | Sennheiser MOMENTUM True Wireless 509181 |
|---|---|---|---|---|---|---|
| Form Factor | in-ear | in-ear | in-ear | in-ear | in-ear | in-ear |
| Driver Type | - | dynamic | dynamic | dynamic | dynamic | dynamic |
| Wireless | false | true | true | true | true | true |
| Active Noise Cancellation | false | true | true | true | true | true |
| Bluetooth Version | - | 5.3 | 5.2 | 5.3 | 5.3 | 5.2 |
| Battery Life Hours | - | 8 | 15 | 6 | 12 | 7 |
| Case Battery Hours | - | 28 | 15 | 18 | 36 | 28 |
| Water Resistance | - | IPX4 | IPX4 | IPX4 | IP55 | IPX4 |
| Multipoint | - | true | true | true | true | false |
| Compare | Compare | Compare | Compare | Compare |
| Product | Anc | Mic | Build | Sound | Battery | Comfort | User Sentiment | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|---|
| S66 | 31.6 | 13.9 | 34.6 | 30 | 47.1 | 71.6 | 49.9 | 13.7 | 49.3 |
| Technics EAH-AZ100 EAH-AZ100-S Compare | 97.3 | 97.2 | 80.7 | 99 | 81.6 | 71.6 | 79.9 | 99.8 | 80.3 |
| Sony WF-C700N WFC700N/B Compare | 97.3 | 82.6 | 80.7 | 81.9 | 81.6 | 71.6 | 97.1 | 89 | 72 |
| Bose QuietComfort Ultra 896637-0020 Compare | 97.3 | 91.2 | 80.7 | 96.7 | 47.1 | 71.6 | 49.9 | 97.9 | 89.6 |
| JBL Live Beam JBLLIVEBEAM3SILAM Compare | 97.3 | 97.2 | 91.8 | 81.9 | 90.8 | 71.6 | 0 | 96.2 | 89.6 |
| Sennheiser MOMENTUM True Wireless 509181 Compare | 97.3 | 97.2 | 80.7 | 99.8 | 80 | 94.2 | 0 | 83.2 | 36.2 |
Price
Value & Pricing
From ¥4,924
Amazon.co.jp 1 offer From ¥4,924
Price History
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
