Sennheiser CX CX 400-II
form factor in-ear
driver type dynamic
23 Overall Score
Price £23
Snapshot
Pros & Cons
Pros
- Strong comfort (71th percentile) 71th
Cons
- Below average connectivity (9th percentile)
- Below average mic (9th percentile)
- Below average user sentiment (16th percentile)
- Below average social proof (25th 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.
Owner sentiment has improved over time
65/100Our AI sentiment read
Based on 11 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Design
| Form Factor | in-ear |
| Ear Tips | S, M, L |
| Weight | 0.1 kg / 0.1 lbs |
Audio
| Driver Type | dynamic |
| Impedance | 16 |
vs Competition
| Spec | Sennheiser CX CX 400-II | Samsung Galaxy Buds Buds3 Pro | EarFun Air Pro Air Pro 4+ | Soundcore Soundcore P31i | JBL Live Pro Live Pro 2 | Baseus Bass BP1 Pro |
|---|---|---|---|---|---|---|
| Form Factor | in-ear | in-ear | in-ear | in-ear | in-ear | in-ear |
| Driver Type | dynamic | Dynamic | hybrid | Dynamic Driver | dynamic | dynamic |
| Wireless | - | true | true | true | true | true |
| Active Noise Cancellation | - | true | true | true | true | true |
| Bluetooth Version | - | 5.4 | 6.0 | 6.1 | 5.2 | 6.0 |
| Battery Life Hours | - | 6 | 12 | 10 | 10 | 12 |
| Case Battery Hours | - | 26 | 54 | 50 | 30 | 55 |
| Water Resistance | - | IP57 | IP55 | IP55 | IPX5 | IP55 |
| Multipoint | - | true | true | - | true | true |
| Compare | Compare | Compare | Compare | Compare |
| Product | Anc | Mic | Build | Sound | Battery | Comfort | User Sentiment | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|---|
| Sennheiser CX CX 400-II | 28.9 | 9.1 | 33.3 | 27.3 | 47 | 70.6 | 15.7 | 8.7 | 25.1 |
| Samsung Galaxy Buds Buds3 Pro Compare | 96.7 | 96.8 | 98.8 | 91.7 | 72.6 | 93.3 | 79.1 | 99.6 | 91.2 |
| EarFun Air Pro Air Pro 4+ Compare | 96.7 | 96.8 | 91 | 99.8 | 95.9 | 70.6 | 97.3 | 99.3 | 91.2 |
| Soundcore Soundcore P31i Compare | 88.3 | 96.8 | 91 | 96.6 | 93.9 | 70.6 | 91.9 | 84.6 | 91.2 |
| JBL Live Pro Live Pro 2 Compare | 96.7 | 96.8 | 91 | 76 | 83.6 | 70.6 | 79.1 | 97 | 84.9 |
| Baseus Bass BP1 Pro Compare | 96.7 | 96.8 | 91 | 87.1 | 95.9 | 70.6 | 91.9 | 98.5 | 84.9 |
Price
Value & Pricing
From £23
Amazon.co.uk 1 offers From £23
May 30, 2026 £23
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
