New
EarFun K4
The 40mm drivers and Bluetooth 5.4 deliver clear audio, while the 90-hour battery and triple-level volume limiting (74/85/94dBA) ensure safe all-day listening in a 210g BPA-free build. Five LED light modes add fun, and a 10-minute charge provides 8 hours of playtime. Ideal for parents equipping school-age kids with durable, hearing-protective headphones for tablets, online learning, and travel.
form factor over-ear
driver type Dynamic Driver
driver size mm 40
impedance ohms 32
Wireless Yes
bluetooth version 5.4
battery life hours 90
68 Overall Score
Price ¥0
No listings available
Snapshot
Pros & Cons
Pros
- Strong battery (97th percentile) 97th
- Strong comfort (92th percentile) 92th
- Strong social proof (92th percentile) 92th
- Strong build (87th percentile) 87th
Cons
- Below average anc (30th 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
85/100Our AI sentiment read
Based on 13 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Design
| Form Factor | over-ear |
| Foldable | Yes |
| Weight | 0.2 kg / 0.5 lbs |
| Ear Cushion | Leather |
Audio
| Driver Type | Dynamic Driver |
| Driver Size | 40 |
| Freq Max | 20000 |
| Impedance | 32 |
| Sensitivity | 100 |
| Codecs | Volume Limited for Kids, LED Lights, Long Battery Life, Bluetooth 5.4 |
Noise Control
| ANC | No |
Connectivity
| Wireless | Yes |
| Bluetooth | 5.4 |
| Wired Connector | 3.5mm |
Battery
| Battery Life | 90 |
| Charge Time | 0.17 |
| Fast Charging | 10-minute charging providing 8 hours battery life |
| Charging | USB-C |
Microphone
| Microphone | Yes |
| NC Mic | Yes |
Features
| Touch Controls | No |
| Volume Limiting | Yes |
| Water Resistance | Water-Resistant |
vs Competition
| Spec | EarFun K4 | Sony WH-1000XM6 WH-1000XM6 | Bowers & Wilkins Px8 S2 Px8 S2 | Sennheiser MOMENTUM 4 M4AEBT | JBL Live 770NC | TOZO HT3 HT3 |
|---|---|---|---|---|---|---|
| Form Factor | over-ear | over-ear | over-ear | over-ear | over-ear | over-ear |
| Driver Type | Dynamic Driver | dynamic | dynamic | Dynamic | Dynamic | dynamic |
| Driver Size (mm) | 40 | 30 | 40 | 42 | 40 | 40 |
| Impedance Ohms | 32 | 48 | - | 60 | 32 | 16 |
| Wireless | true | true | true | true | true | true |
| Active Noise Cancellation | false | true | true | true | true | true |
| Open Closed Back | - | closed | closed | closed | closed | closed |
| Bluetooth Version | 5.4 | 5.3 | 5.3 | 5.2 | 5.3 | 6.0 |
| Battery Life Hours | 90 | 30 | 30 | 60 | 65 | 90 |
| Compare | Compare | Compare | Compare | Compare |
| Product | Anc | Mic | Build | Sound | Battery | Comfort | User Sentiment | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|---|
| EarFun K4 | 30.3 | 66.2 | 87.4 | 73 | 96.9 | 91.6 | 69.8 | 70.9 | 91.5 |
| Sony WH-1000XM6 WH-1000XM6 Compare | 97.5 | 91.1 | 92.2 | 90 | 71.6 | 79.2 | 0 | 99.7 | 83.2 |
| Bowers & Wilkins Px8 S2 Px8 S2 Compare | 97.5 | 99.3 | 95.8 | 99.4 | 71.6 | 50.1 | 87 | 97.4 | 97.5 |
| Sennheiser MOMENTUM 4 M4AEBT Compare | 97.5 | 84.8 | 76.8 | 97.6 | 88.9 | 79.2 | 0 | 98.9 | 59.8 |
| JBL Live 770NC Compare | 97.5 | 78.2 | 97.2 | 84.7 | 91.4 | 50.1 | 69.8 | 99.9 | 91.5 |
| TOZO HT3 HT3 Compare | 87.2 | 84.8 | 95.8 | 98.9 | 96.9 | 50.1 | 96.1 | 96.6 | 91.5 |
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
