EarFun K4

★★★★★ 4.6 (460)

Con drivers dinámicos de 40 mm y Bluetooth 5.4, destaca su batería de 90 horas y el limitador de volumen ajustable entre 74, 85 y 94 dBA para seguridad auditiva infantil. Los materiales sin BPA, las luces LED multicolor de 5 modos y el diseño plegable añaden un toque lúdico y práctico. Ideal para niños pequeños que necesitan unos auriculares seguros, duraderos y divertidos para viajes o uso escolar.

Form Factor over-ear
driver type dynamic
driver size mm 40
impedance ohms 32
Wireless Sí
bluetooth version 5.4
battery life hours 90
EarFun K4 headphones
74 Puntuación global

Sin precio actual de tiendas

También disponible en:

Resumen

The 30-Second Version

The EarFun K4 is a kids' headphone with a 90-hour battery, three-level volume limiting, and LED lights that kids actually love. It's comfortable, well-built, and priced around $30 USD. The mic is weak and there's no ANC, but for school and travel, this is one of the best value picks we've seen.

Pros & Cons

Ventajas

  • 90-hour battery life is best-in-class for kids' headphones 98th
  • Three-level volume limiter actually adapts to different environments 95th
  • LED lights with 5 modes are a genuine hit with kids 92nd
  • Comfortable ear cushions that don't pinch small heads 86th

Desventajas

  • Mic quality is mediocre for calls and online classes
  • No real ANC, just passive isolation
  • Startup can feel laggy on first power-on
  • Bulky design might not suit smaller kids

Opinión de los propietarios

The Word on the Street

4.6/5 (460 reviews)
👍 Parents consistently mention the battery life as a standout, with several saying it lasts through a full week of school and travel without needing a charge.
👍 The LED lights are a recurring hit, with multiple buyers noting their kids love cycling through the different colors and modes.
🤔 A few owners feel the maximum volume could be a bit louder, even at the 94 dBA setting, while others appreciate the conservative limiting for younger kids.

Cómo cambió la opinión de los propietarios con el tiempo

Exclusiva

Según cuándo escribieron realmente sus opiniones los clientes, para ver si los elogios iniciales se mantuvieron.

La opinión de los propietarios ha mejorado con el tiempo
85/100Nuestro análisis de opinión con IAconfianza media · 11 fuentes · jun 2026
1★2★3★4★5★Q2 '25: 5.0★ · 1 opiniónQ3 '25: 4.5★ · 2 opinionesQ4 '25: 5.0★ · 2 opinionesQ1 '26: 5.0★ · 9 opinionesQ2 '26: 5.0★ · 2 opiniones12292Q2 '25Q3 '25Q4 '25Q1 '26Q2 '26
Valoración mediaSatisfechos (4-5★)Insatisfechos (1-2★)Altura de la barra = número de opiniones

Basado en 16 opiniones de clientes con fecha, agrupadas por trimestre natural. El análisis por periodo está en inglés.

Las pruebas

Performance

The 40mm drivers push out a sound that's solidly above average, with clear vocals and balanced bass that works well for audiobooks, music, and online classes. Battery life is the headline here, sitting in the 98th percentile of our database. That 90-hour claim isn't marketing fluff, and the 10-minute quick charge giving you 8 hours is genuinely useful when you realize the headphones are dead right before a road trip. The volume limiter is the real star though. Three settings at 74, 85, and 94 dBA mean you can actually adapt to the environment instead of just capping everything at one level. Bluetooth 5.4 pairing is quick and stable. The weak spot is the mic, which lands in the bottom half of our database and makes calls sound a bit muffled.

Performance Percentiles

Anc 32.8
Mic 62.6
Build 85.8
Sound 71.8
Battery 97.7
Comfort 91.9
User Sentiment 73
Connectivity 73.7
Valoración social 95
Affordability 78

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 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

Against the Sony WH-CH720N, the K4 loses on ANC and overall sound refinement, but the Sony costs more and isn't really aimed at kids. The Soundcore Life Q20 has better ANC and a more premium feel, but again, it's not built for small heads and lacks the volume limiting that parents actually need. The JBL Tune 670NC is a closer competitor with better brand recognition, but the K4 beats it on battery life and the LED lights are a differentiator kids actually care about. The QCY H3 PRO and Truefree HF-10 are cheaper alternatives, but they don't match the K4's comfort or battery endurance.

Spec EarFun K4 Sennheiser Momentum 4 Bowers & Wilkins Px7 S3 Sony ULT WEAR WHULT900N/B Bose QuietComfort Ultra (2nd Gen) Nothing Headphone (a) B186
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 42 40 40 - 40
Impedance Ohms 32 60 33 314 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 5.2 5.3 5.2 5.4 5.4
Battery Life Hours 90 60 30 30 30 135
Compare Compare Compare Compare Compare
Producto AncMicBuildSoundBatteryComfortUser SentimentConnectivityValoración socialAffordability
EarFun K4 32.862.685.871.897.791.97373.79578
Sennheiser Momentum 4 Compare 98.679.99197.391.678.639.898.872.613.8
Bowers & Wilkins Px7 S3 Compare 98.69874.899.277.965.456.398.583.76.2
Sony ULT WEAR WHULT900N/B Compare 98.679.999.497.477.950.55.699.789.726.7
Bose QuietComfort Ultra (2nd Gen) Compare 90.673.39149.877.978.656.399.1958.1
Nothing Headphone (a) B186 Compare 98.681.59193.599.930.288.51009526.5

Precio

Value & Pricing

At around $30 USD, this is a steal. The EUR pricing varies a bit, from EUR 29 to EUR 36 across vendors, so it's worth shopping around. The DE listings tend to have the best deal if you're in Europe. For what you get, a 90-hour battery, safe volume limiting, and build quality that's in the 85th percentile, this is one of the better value picks in the kids' headphone space. You'd have to spend significantly more to get a meaningful upgrade.

Price History

5000 INR 6000 INR 7000 INR 8000 INR 9000 INR 10.000 INR 25 may18 jul2 nov 9190 INR

Leer más

Overview

The EarFun K4 is a kids' headphone that actually gets the important stuff right. It's built for small heads, has a real volume limiter with three settings, and the battery life is frankly absurd at 90 hours. The LED lights are a nice touch that kids genuinely love, and at this price, it's hard to argue with the package.

It's not perfect. The mic is mediocre, and there's no real ANC to speak of. But for school, travel, and keeping your kid's ears safe while they watch the same Minecraft video for the 400th time, this thing nails the brief.

Common Questions

Q: Is the volume limiter actually safe for young kids?

Yes. The 74 dBA mode is designed for quiet environments and younger children, while 85 dBA works for daily school use. The 94 dBA setting is meant for noisy places like planes, and even that stays within generally accepted safe listening limits for limited periods.

Q: How long does the battery really last?

EarFun claims 90 hours on a single charge, and our testing data puts it in the 98th percentile for battery life. A 10-minute quick charge gives you about 8 hours of playback, which is plenty for a school day or a long car ride.

Q: Can these be used wired if the battery dies?

Yes. The K4 includes a 3.5mm audio cable, so you can plug them directly into a tablet, phone, or laptop when the battery is drained or when you want to avoid Bluetooth entirely.

Who Should Skip This

If your kid is older and wants something that looks less like a kids' product, or if you need serious call quality for online classes with lots of speaking, look elsewhere. The mic is the weakest part of this package, and the bulky design might feel clunky for smaller kids. Also, if you want ANC for noisy environments like flights, the passive isolation here won't cut it. You'd be better off with something like the Soundcore Life Q20 or Sony WH-CH720N, though you'll pay more for the privilege.

Verdict

If you need a pair of headphones for a kid between roughly 5 and 12, the EarFun K4 is an easy recommendation. The volume limiter gives you peace of mind, the battery life means you're not charging it every other day, and the LED lights make it feel like a fun gadget rather than a boring safety device. It's not for audiophiles or anyone who needs serious call quality, but for the intended use case, it's hard to beat at this price.

Usage Scores

Work (49.8)Calls (41.7)Music (59)General (74.1)Budget (91.3)Gaming (64.6)Studio (63.3)Commute (49.4)
  • Work49.8
  • Calls41.7
  • Music59
  • General74.1
  • Budget91.3
  • Gaming64.6
  • Studio63.3
  • Commute49.4

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