JBL Junior 320BT
The 50-hour battery life and volume-limited 85dB output make these a standout for safe, long-term use by children. The compact, foldable design and included sticker set add a playful, travel-friendly element beyond the core safety features. These are best for parents seeking durable, wireless headphones that protect young ears during road trips or remote learning.
form factor on-ear
driver type dynamic
driver size mm 40
impedance ohms 32
Wireless Yes
active noise cancellation Yes
open closed back closed
bluetooth version 5.3
89 Overall Score
Price R$0
Snapshot
Pros & Cons
Pros
- Strong connectivity (99th percentile) 99th
- Strong social proof (98th percentile) 98th
- Strong anc (98th percentile) 98th
- Strong comfort (92th percentile) 92th
Cons
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 held steady over time
Based on 46 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Design
| Form Factor | on-ear |
| Open/Closed | closed |
| Foldable | Yes |
| Weight | 0.2 kg / 0.5 lbs |
| Ear Cushion | Leather |
| Headband | fabric |
Audio
| Driver Type | dynamic |
| Driver Size | 40 |
| Drivers | 1 |
| Freq Min | 20 |
| Freq Max | 20000 |
| Impedance | 32 |
| Sensitivity | 80 |
| Max SPL | 81 |
| Hi-Res Audio | Yes |
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 |
| Boom Mic | No |
| Detachable Mic | No |
Features
| Voice Assistant | Alexa, Google Assistant |
| Touch Controls | Yes |
| App | JBL Headphones |
| Volume Limiting | Yes |
| Gaming Mode | No |
| Water Resistance | no |
vs Competition
| Spec | JBL Junior 320BT | Sennheiser MOMENTUM 4 M4AEBT | Sony WH-1000XM6 WH-1000XM6 | Bowers & Wilkins Px8 S2 Px8 S2 | Bose QuietComfort Ultra QuietComfort Ultra | Audio-Technica M-Series ATH-M50xBT2 |
|---|---|---|---|---|---|---|
| Form Factor | on-ear | over-ear | over-ear | over-ear | over-ear | over-ear |
| Driver Type | dynamic | Dynamic | dynamic | dynamic | Dynamic | dynamic |
| Driver Size (mm) | 40 | 42 | 30 | 40 | - | 45 |
| Impedance Ohms | 32 | 60 | 48 | - | 32 | 38 |
| Wireless | true | true | true | true | true | true |
| Active Noise Cancellation | true | true | true | true | true | false |
| Open Closed Back | closed | closed | closed | closed | closed | closed |
| Bluetooth Version | 5.3 | 5.2 | 5.3 | 5.3 | 5.3 | 5.0 |
| Battery Life Hours | 50 | 60 | 30 | 30 | 24 | 50 |
| Compare | Compare | Compare | Compare | Compare |
| Product | Anc | Mic | Build | Sound | Battery | Comfort | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|
| JBL Junior 320BT | 97.5 | 85.1 | 77.1 | 79.5 | 83.7 | 91.6 | 98.9 | 98.1 |
| Sennheiser MOMENTUM 4 M4AEBT Compare | 97.5 | 85.1 | 77.1 | 97.6 | 89.1 | 79.3 | 98.9 | 94.4 |
| Sony WH-1000XM6 WH-1000XM6 Compare | 97.5 | 91.2 | 92.3 | 90.2 | 72.5 | 79.3 | 99.7 | 96 |
| Bowers & Wilkins Px8 S2 Px8 S2 Compare | 97.5 | 99.4 | 95.9 | 99.4 | 72.5 | 50.6 | 97.5 | 100 |
| Bose QuietComfort Ultra QuietComfort Ultra Compare | 87.3 | 78.5 | 95.9 | 48.1 | 68.9 | 79.3 | 99.3 | 98.1 |
| Audio-Technica M-Series ATH-M50xBT2 Compare | 30.4 | 78.5 | 77.1 | 94.3 | 83.7 | 86.5 | 92.9 | 93.2 |
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
