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.
form factor over-ear
driver type dynamic
driver size mm 40
impedance ohms 32
Wireless Yes
bluetooth version 5.4
battery life hours 90
70 Overall Score
Price £27
Snapshot
Pros & Cons
Pros
- Strong battery (97th percentile) 97th
- Strong social proof (94th percentile) 94th
- Strong comfort (93rd percentile) 93rd
- Strong build (88th percentile) 88th
Cons
- 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.
Owner sentiment has improved over time
85/100Our AI sentiment read
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 | TOZO HT2 | Sony WH-CH720N | Truefree HF-10 | Soundcore Space One A3035Z11 | HAYLOU S30 |
|---|---|---|---|---|---|---|
| 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 | 30 | 40 | 40 | 40 |
| Impedance Ohms | 32 | 32 | 325 | 20 | 16 | 32 |
| 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 | 5.2 | 6.0 | 5.3 | 5.4 |
| Battery Life Hours | 90 | 60 | 35 | 125 | 40 | 80 |
| Compare | Compare | Compare | Compare | Compare |
| Product | Anc | Mic | Build | Sound | Battery | Comfort | User Sentiment | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|---|
| EarFun K4 | 32.1 | 68.1 | 87.8 | 75 | 97.4 | 92.7 | 70.6 | 74.5 | 93.9 |
| TOZO HT2 Compare | 93.4 | 83.2 | 95.7 | 99.1 | 90.7 | 81 | 87.1 | 83.1 | 87.5 |
| Sony WH-CH720N Compare | 98 | 79.2 | 97 | 73.2 | 78.7 | 3 | 0 | 97.4 | 80.3 |
| Truefree HF-10 Compare | 93.4 | 85.3 | 95.7 | 83.1 | 99.8 | 81 | 87.1 | 95 | 93.9 |
| Soundcore Space One A3035Z11 Compare | 98 | 83.2 | 87.8 | 93.2 | 81.5 | 87.7 | 45.4 | 95.8 | 87.5 |
| HAYLOU S30 Compare | 93.4 | 99.7 | 77.7 | 99.1 | 96.2 | 46.5 | 70.6 | 98.5 | 98.4 |
Price
Value & Pricing
From £27
Amazon.co.uk 1 offer From £27
Price History
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
