EarFun K4
The 90-hour battery life and triple-volume limit (74/85/94dBA) make these over-ears safe for kids, while 40mm drivers and Bluetooth 5.4 provide clear stereo sound. At just 213g and foldable, with five colorful LED light modes and a 10-minute fast charge for 8 hours, it combines portability with fun. Best for school-age children needing durable, hearing-safe headphones for tablets and travel, backed by Rohs2.0 and CPC safety certifications.
Snapshot
Pros & Cons
Pros
- Strong battery (98th percentile) 98th
- Strong comfort (95th percentile) 95th
- Strong social proof (95th percentile) 95th
- Strong build (90th percentile) 90th
Cons
- Below average anc (34th 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 16 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 Size | 40 |
| Freq Max | 20000 |
| Impedance | 32 |
| Sensitivity | 100 |
| Codecs | EarFun K4 Kids Bluetooth Headphones, Wireless Headphones with LED Lights, 74/85/94dBA Volume Limited, Built-in Mic, 90H Playtime, Bluetooth 5.4 Over Ear Headphone for iPad/Tablet/School, Dark Black |
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 ULT WEAR WHULT900N/B | Soundcore Life Q20 | TOZO HT3 | JBL Live 770NC | Truefree HF-10 |
|---|---|---|---|---|---|---|
| Form Factor | over-ear | over-ear | over-ear | over-ear | over-ear | over-ear |
| Driver Type | dynamic | dynamic | dynamic | dynamic | dynamic | dynamic |
| Driver Size (mm) | 40 | 40 | 40 | 40 | 40 | 40 |
| Impedance Ohms | 32 | 314 | 16 | 16 | 32 | 20 |
| 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 | 5.2 | 5.0 | 6.0 | 5.3 | 6.0 |
| Battery Life Hours | 90 | 30 | 60 | 90 | 65 | 125 |
| Compare | Compare | Compare | Compare | Compare |
| Product | Anc | Mic | Build | Sound | Battery | Comfort | User Sentiment | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|---|
| EarFun K4 | 33.6 | 75.5 | 89.7 | 81.2 | 98.1 | 95 | 70.6 | 81.3 | 95 |
| Sony ULT WEAR WHULT900N/B Compare | 98.5 | 89.4 | 81.4 | 96.9 | 82.1 | 62.1 | 70.6 | 99.2 | 89.6 |
| Soundcore Life Q20 Compare | 95.2 | 89.4 | 89.7 | 100 | 93.1 | 91 | 95.9 | 91.7 | 89.6 |
| TOZO HT3 Compare | 92 | 89.4 | 96.3 | 99.2 | 98.1 | 62.1 | 95.9 | 97.7 | 95 |
| JBL Live 770NC Compare | 98.5 | 84.9 | 93.8 | 89.3 | 94.6 | 62.1 | 70.6 | 100 | 95 |
| Truefree HF-10 Compare | 95.2 | 89.4 | 96.3 | 87.2 | 99.8 | 85.8 | 87.1 | 96.4 | 95 |
Price
Value & Pricing
Amazon.it 1 offer From €42
We started tracking prices for this product on May 26, 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.
