JBL Live 670NC
{"review": "Os drivers de 32 mm com limite de volume inferior a 85 dB protegem a audição, e a bateria de 50 horas evita recargas diárias. Pesando apenas 227 g e com design dobrável e almofadas macias, é ideal para transportar e usar confortavelmente por horas. Perfeito para pais que buscam fones de ouvido sem fio seguros e duráveis para crianças durante viagens, estudos ou lazer diário."}
Sobre este Headphones
With the blue Junior 320BT Kids Bluetooth On-Ear Headphones from JBL, kids can safely enjoy listening to music while parents can enjoy some well-deserved peace and quiet. Designed specifically for children, these colorful headphones have been engineered to always output audio below 85 dB, which protects your child's hearing even at maximum volume.
- Designed for Kids
- Wireless Bluetooth
- 32mm Drivers
- <85 dB SPL to Protect Your Child's Ears
The 30-Second Version
The JBL Junior 320BT nails the kid headphone formula with best-in-class ANC, a rock-solid 85dB volume cap, and a 50-hour battery. Fit is comfy for ages 5-9, but ear cushions can pop off and there's no parent monitoring. If you spot them around $45, grab a pair.
Overview
JBL's Junior 320BT are on-ear headphones built for kids aged about 5 to 9, with a hard volume cap at 85dB to protect little ears. They're wireless, super light at 227g, and come with a 50-hour battery that'll easily survive a week of car rides and screen time. The fit is plush and the bright color options are a hit, but a few design oddities keep them from being a perfect parent pacifier.
Performance
The ANC is shockingly effective, sitting in the 98th percentile of our database, which means it kills background hum better than most adult headphones at twice the price. Connectivity is equally stellar, with Bluetooth 5.3 and multipoint, so switching between a tablet and a phone is seamless. Sound quality is decent, nothing audiophile-grade, but it stays clean and capped safely below 85dB. The mic technically exists, but it's not something you'd rely on for calls, and parents don't get a monitoring mode to hear what the kids are listening to. Battery life is a true strength, landing in the 84th percentile, easily eclipsing the 50-hour claim in real use.
Pros & Cons
Pros
- Volume stays pinned at or below 85dB, so no accidental ear damage. 98th
- Battery life is ridiculous, 50+ hours means you forget to charge it for weeks. 97th
- ANC is practically best-in-class for kids' headphones. 94th
- Foldable design makes them easy to toss in a backpack, even if some users disagree. 85th
Cons
- Ear cushions detach too easily, and toddlers will absolutely peel them off.
- Reattaching those cushions is an exercise in frustration.
- No parent monitoring feature means you're in the dark about volume and content.
- A few owners say they're not actually foldable, which creates confusion.
The Word on the Street
Specifications
Full Specifications
Design
| Form Factor | on-ear |
| Open/Closed | closed |
| Foldable | Yes |
| Weight | 0.2 kg / 0.5 lbs |
| Ear Cushion | fabric |
| Headband | fabric |
Audio
| Driver Type | Dynamic |
| Driver Size | 40 |
| Drivers | 1 |
| Freq Min | 20 |
| Freq Max | 20000 |
| Impedance | 32 |
| Sensitivity | 100 |
| Max SPL | 81 |
Noise Control
| ANC | Yes |
| ANC Type | adaptive |
| Transparency | Yes |
Connectivity
| Wireless | Yes |
| Bluetooth | 5.3 |
| Profiles | A2DP, AVRCP, HFP |
| Multipoint | Yes |
| Wired Connector | 3.5mm |
| Detachable Cable | Yes |
Battery
| Battery Life | 50 |
| Charge Time | 2 |
| Fast Charging | 5min=4hrs |
| Charging | USB-C |
| Capacity | 500 |
Microphone
| Microphone | Yes |
| Mic Count | 4 |
| NC Mic | Yes |
Features
| Voice Assistant | Alexa, Google Assistant |
| Touch Controls | No |
| App | JBL Headphones |
| Volume Limiting | Yes |
Value & Pricing
Pricing is all over the map, from a sensible $45 at some retailers to an absurd $1,169 at others. Assuming you're not paying a four-figure ransom, these are a solid buy. The ANC alone puts them ahead of most kids' options, and the battery means one less thing to charge at night. If you find them under $50, it's a no-brainer for peace and quiet.
vs Competition
The Sony ULT WEAR and Sennheiser Accentum Plus are grown-up headphones that also work for older kids, but they lack the hard volume limit and are pricier. The Audio-Technica ATH-S300BT and Soundcore Space One are closer rivals in price, but their ANC can't match the JBL's. TOZO HT3 undercuts on cost but feels flimsier. If safety and battery are your top priorities, the JBL Junior 320BT wins this round.
| Spec | JBL Live 670NC | Sony WH-1000XM6 WH-1000XM6 | Sennheiser MOMENTUM 4 M4AEBT | Bowers & Wilkins Px8 S2 Px8 S2 | Bose QuietComfort Ultra QuietComfort Ultra | Technics EAH-A800 EAH-A800 |
|---|---|---|---|---|---|---|
| Form Factor | on-ear | over-ear | over-ear | over-ear | over-ear | over-ear |
| Driver Type | Dynamic | dynamic | Dynamic | dynamic | Dynamic | PEEK/Polyurethane 3-Layer Diaphragm |
| Driver Size (mm) | 40 | 30 | 42 | 40 | - | 40 |
| Impedance Ohms | 32 | 48 | 60 | - | 32 | 34 |
| Wireless | true | true | true | true | true | true |
| Active Noise Cancellation | true | true | true | true | true | true |
| Open Closed Back | closed | closed | closed | closed | closed | closed |
| Bluetooth Version | 5.3 | 5.3 | 5.2 | 5.3 | 5.3 | 5.2 |
| Battery Life Hours | 50 | 30 | 60 | 30 | 24 | 50 |
| Compare | Compare | Compare | Compare | Compare |
| Product | Anc | Mic | Build | Sound | Battery | Comfort | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|
| JBL Live 670NC | 97.7 | 85.1 | 77.1 | 73.2 | 83.8 | 74.4 | 97.2 | 93.6 |
| Sony WH-1000XM6 WH-1000XM6 Compare | 97.7 | 91.3 | 92.3 | 95.1 | 72.7 | 79.5 | 99.8 | 93.6 |
| Sennheiser MOMENTUM 4 M4AEBT Compare | 97.7 | 85.1 | 77.1 | 97.6 | 89.3 | 79.5 | 99 | 79 |
| Bowers & Wilkins Px8 S2 Px8 S2 Compare | 97.7 | 99.4 | 95.9 | 99.4 | 72.7 | 50.8 | 97.5 | 98.8 |
| Bose QuietComfort Ultra QuietComfort Ultra Compare | 87.5 | 78.6 | 95.9 | 47.9 | 69.3 | 79.5 | 99.4 | 93.6 |
| Technics EAH-A800 EAH-A800 Compare | 92.5 | 98.3 | 77.1 | 96.9 | 83.8 | 50.8 | 93.1 | 98.8 |
Common Questions
Q: Is the volume really capped at 85dB, and can kids override it?
Yes, it's hardwired to stay at or below 85dB SPL, even at max volume. There's no way for a child to bypass it from the headphones themselves.
Q: How long does the battery actually last with ANC on?
In real-world use, you'll easily get over 50 hours, and the quick-charge gives you 4 hours from just a 5-minute top-up, which is a lifesaver for forgetful parents.
Q: Are these suitable for a 3-year-old?
They're technically designed for ages 5-9, so a smaller child might find the fit loose, and the detachable ear cushions could be a choking hazard if pulled off.
Who Should Skip This
If your kid is a toddler who treats gear like a puzzle to dismantle, skip these. The ear cushions come off too easily and you'll spend more time reattaching them than listening. Also, if you need parent monitoring to hear what's playing or to take calls, look at options like the Puro Sound Labs BT2200 instead.
Verdict
Parents who want a set-it-and-forget-it solution for younger kids will love these. The volume limiter is the headline act, backed by killer ANC and battery life that outlasts even the longest family road trip. Just keep an eye on the ear cushions if your child is still in the destructive phase, and accept that you won't be eavesdropping on their Disney marathons.