JBUNION SBT-399
JBL Tune 670NC
What Buyers Say
JBUNION SBT-399
These kids' Bluetooth headphones are overwhelmingly well-liked, with many praising the comfortable fit, cute shark design, and volume-limiting safety feature. Battery life and fast charging are frequently highlighted as strong points, and the sound quality is considered good for children's use. However, one verified review reports a completely non-functional unit with static and Bluetooth failure, which is a significant outlier. Overall, most parents find them durable, easy to use, and great value for the price.
Pros
- Comfortable fit for kids
- Cute shark design
- Volume limiting for safety
- Long battery life
- Fast charging
Cons
- Potential for defective unit
- Static noise with cord
- Bluetooth may not work
- Slightly large for toddlers
JBL Tune 670NC
Most users love these JBL headphones, praising excellent sound quality, effective noise cancellation, comfortable fit, and long battery life—many report great value for the price. One reviewer had a defective unit with no sound in one ear. A few users appreciate the easy controls, foldable design, and app connectivity. Overall, sentiment is strongly positive with a minor quality control concern.
Pros
- Excellent sound quality
- Effective noise cancellation
- Long battery life
- Comfortable fit
- Great value for price
Cons
- Potential defective unit (no sound in one ear)
- No answers to Q&A questions
Scores
Specifications
| JBUNION SBT-399 | JBL Tune 670NC | |
|---|---|---|
| Design | ||
| Form Factor | over-ear | on-ear |
| Open/Closed | — | closed |
| Foldable | ✓ | ✓ |
| Weight | 0.11 kg★ | 0.17 kg |
| Ear Cushion | — | soft ear cushions |
| Headband | — | padded headband |
| Audio | ||
| Driver Type | — | dynamic |
| Driver Size | 40 mm★ | 32 mm |
| Drivers | — | 1★ |
| Freq Min | — | 20 Hz★ |
| Freq Max | — | 20 kHz★ |
| Impedance | 32 Ω | 32 Ω |
| Sensitivity | — | 98 dB★ |
| Max SPL | — | 95 dB★ |
| Hi-Res Audio | — | ✗ |
| Codecs | Bluetooth Kids Headphones, Wireless Headphones for Kid with Mic, 75/85/94dB Volume Limited, Includes 3.5mm Aux Cord, Foldable Dinosaur Teens Headset for School, Home, Travel, Tablet | SBC, AAC, LC3 |
| Noise Control | ||
| ANC | — | ✓★ |
| ANC Type | — | adaptive |
| Transparency | — | ✓★ |
| Connectivity | ||
| Wireless | ✓ | ✓ |
| Bluetooth | 5.4★ | 5.3 |
| Profiles | — | A2DP 1.4, AVRCP, HFP 1.8 |
| Multipoint | — | ✓★ |
| Wired Connector | 3.5mm | 3.5mm |
| Detachable Cable | — | ✓★ |
| Cable Length | — | 1.2192000150680542 m |
| Battery | ||
| Battery Life | 30 hrs | 70 hrs★ |
| Charge Time | — | 2 hrs★ |
| Fast Charging | — | 5min=3hrs |
| Charging | — | USB-C★ |
| Capacity | — | 690 mAh★ |
| Microphone | ||
| Microphone | ✓ | ✓ |
| Mic Count | — | 1★ |
| NC Mic | ✓ | ✓ |
| Boom Mic | — | ✗ |
| Features | ||
| Voice Assistant | — | voice assistant |
| Touch Controls | — | ✗ |
| App | — | JBL Headphones |
| Volume Limiting | ✓★ | — |
| Gaming Mode | — | ✓★ |
Pros & Cons
JBUNION SBT-399
- Strong comfort (96th percentile)96th %ile
- Strong social proof (95th percentile)95th %ile
- Strong connectivity (74th percentile)
- Strong user sentiment (72nd percentile)
- Below average anc (32nd percentile)
- Below average build (34th percentile)
JBL Tune 670NC
- Strong connectivity (99th percentile)99th %ile
- Strong social proof (99th percentile)99th %ile
- Strong anc (98th percentile)98th %ile
- Strong battery (94th percentile)94th %ile
Pricing
JBUNION SBT-399
No current pricing available
JBL Tune 670NC
Verdict
Scores 91 overall, wins 7 of 7 usage categories and 15 of 40 specs.
