Beats Solo 4 - Wireless On-Ear Bluetooth Headphones, Up to 50-Hour Battery Life, Ultra-Lightweight Comfort, Powerful and Balanced Sound, Apple & Android Compatible - Slate Blue
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AI Verdict
These are super lightweight on-ear headphones with insane battery life, built for casual listeners who value portability and style over noise cancellation or audiophile-grade sound.
The Beats Solo 4 nail portability and battery life, lasting a staggering 50 hours on a charge. However, the fit is the deciding factor; the on-ear design is a dealbreaker for anyone who finds direct pressure on their ears uncomfortable, especially during sessions longer than an hour. They're a strong fit for a grab-and-go, all-day battery headphone, but a weak fit for long-haul comfort or noisy environments.
If you need headphones for extended wear, look for an "over-ear" design with larger earcups that sit around your ears to avoid direct pressure.
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Pros
- Up to 50 hours of wireless battery life is genuinely massive.
- Fast Fuel charging provides up to 5 hours of playback from a 10-minute charge.
- Extremely lightweight at just 217 grams (7.65 oz).
- Sound is more balanced and clearer than the bass-heavy Solo 3.
- Supports wired audio via both USB-C and a 3.5mm jack, and can play passively with the 3.5mm cable even if the battery is dead.
- Features Personalized Spatial Audio with dynamic head tracking for Apple users.
Cons
- On-ear design creates pressure on the ears that becomes uncomfortable for many after an hour or two.
- No Active Noise Cancellation (ANC), which is a major omission at this price point.
- They don't fold up, only lay flat, making them less compact in a bag than the previous Solo 3 model.
- Sound can leak at higher volumes, meaning people nearby might hear your music.
Dimension Scores
The sound is much more balanced and clear than older Beats models, but some find the bass lacking and the highs can be a bit harsh.
Volume gets plenty loud, but the bass is intentionally less boomy than the Solo 3, which disappoints some users looking for that signature Beats punch.
Features Bluetooth 5.3, seamless pairing for both Apple and Android, and offers both USB-C and 3.5mm wired audio options.
They are incredibly lightweight at 217g, but the inability to fold into a smaller shape is a step back from the Solo 3, and the plastic build feels less than premium.
Best For
- Long commutes or travel days where you can't easily recharge.
- Casual listening at home or in a quiet office.
- Users who prioritize a very lightweight, non-bulky headphone.
- Apple and Android users who want simple pairing and basic integration.
Not Recommended For
- Anyone sensitive to pressure on their ears or who wears glasses for long periods.
- Commuters on loud trains or planes who need to block out engine noise.
- Audio purists seeking a neutral soundstage or powerful, booming bass.
Watch Out For
- The clamping force is significant and can cause soreness on your ear cartilage after about an hour of use, a common complaint for on-ear styles.
- There's no auto-pause feature, so music keeps playing when you take them off your head.
- The included soft case is small and offers minimal protection against drops or being crushed in a bag.
- While sound is more balanced, some long-time Beats users find the bass to be weaker than expected.
- The Android app is very basic and offers almost no customization for controls or audio EQ.
Full Specifications
| UPC | 195949121920 |
| ASIN | B0CZPHPJLN |
| Brand | Beats |
| Color | Slate Blue |
| Style | Solo4 |
| Units | 1.0 Count |
| Material | Fabric |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Impedance | 32 Ohms |
| Model Name | Beats Solo 4 |
| Form Factor | On Ear |
| Item Weight | 1.19 pounds |
| Sensitivity | 1 A/W |
| Battery Life | 50 Hours |
| Control Type | Volume Control, App Control, Button Control, Siri, Touch Control, Voice Control |
| Manufacturer | Apple |
| Audio Latency | 20 Milliseconds |
| Cable Feature | Detachable |
| Ear Placement | On Ear |
| Noise Control | Sound Isolation |
| Series Number | 1 |
| Control Method | App, Touch, Voice |
| Earpiece Shape | Circle |
| Bluetooth Range | 100 Meters |
| Controller Type | Button, Siri, Touch |
| Headphones Jack | 3.5 mm Jack |
| Number of Items | 1 |
| Special Feature | Fast Charging, Lightweight, Microphone Included, Rechargeable Battery, Volume Control |
| Audio Driver Size | 5 Centimeters |
| Audio Driver Type | Dynamic Driver |
| Bluetooth Version | 5.3 |
| Item model number | MUW43LL/A |
| Compatible Devices | Cellphones, Desktops, Gaming Consoles, Laptops, Tablets |
| Frequency Response | 1 GHz |
| Product Dimensions | 8.23 x 5.2 x 3.7 inches |
| Carrying Case Color | Black |
| Included Components | 3.5 mm analog audio cable, Beats Solo 4 headphones, Protective Case, Quick Start Guide and Warranty Card, USB-C to USB-C cable for charging and audio (USB-C power adapter sold separately) |
| Customer Package Type | Standard Packaging |
| Carrying Case Material | Fabric |
| Water Resistance Level | Not Water Resistant |
| Age Range (Description) | Adult, Teen |
| Connectivity Technology | Wireless |
| Specific Uses For Product | Entertainment, Fitness, Travel |
| Recommended Uses For Product | Calling, Exercising, Gaming, Office Meetings |
| Wireless Communication Technology | Bluetooth |
| Global Trade Identification Number | 00195949121920 |
What Buyers Say
The first thing you notice is how incredibly light these are, but the second thing you notice is the clamping force on your ears. While some users find them comfortable enough for short periods, many report ear pain after an hour or two, especially if you wear glasses. The sound signature is a big departure from old-school Beats; it's much more balanced and clear, which is great for vocals, but might leave bass-heads wanting more. The 50-hour battery life is the undisputed killer feature, it just seems to go on forever. A weird downgrade is that they no longer fold up like the Solo 3s, they just swivel flat, taking up more space in a bag. The lack of Active Noise Cancellation at this price is a tough pill to swallow for anyone who plans to use these while commuting.
“the battery is insane i literally forget where i put the charger but my ears are screaming after my commute, had to switch to my old buds.”
Common Praise
- The battery life is genuinely incredible, with many users going days without charging.
- Sound is noticeably clearer and more balanced compared to the muddy bass of the Solo 3.
- They are extremely lightweight, making them easy to wear for short bursts.
- Connection is seamless with both iPhones and Android devices.
- You can listen with a 3.5mm cable even when the battery is completely dead.
- Spatial Audio with head tracking is an immersive feature for watching movies on Apple devices.
Common Complaints
- The on-ear design creates uncomfortable pressure points on the ears after about an hour.
- The clamping force is too strong for many users, especially those with glasses.
- No Active Noise Cancellation (ANC) feels like a major missing feature for the price.
- The bass is much weaker than what people expect from the Beats brand.
- They only fold flat and don't have the compact folding hinges of the Solo 3.
- The included soft case feels cheap and doesn't offer much real protection.
Ownership Tips
- The UltraPlush ear cushions feel soft to the touch but can make your ears feel warm after a while.
- If you use them for calls, be aware that Bluetooth audio quality drops significantly while the mic is active, making music sound grainy.
- The physical 'b' button on the left earcup for playback control is intuitive and easy to use without looking.
- The Slate Blue finish looks sharp but is a magnet for fingerprints and smudges.
- You quickly miss having an auto-pause sensor; the music just keeps blasting if you take them off to talk to someone.
Frequently Asked Questions
Do the Beats Solo 4 have Active Noise Cancellation (ANC)?
No, they do not have Active Noise Cancellation. They offer some passive noise isolation from the earcups, but they struggle to block out low-frequency sounds like plane or train engines.
Can you use the Beats Solo 4 with a wire?
Yes, you can use them with the included 3.5mm audio cable or with a USB-C to USB-C cable for lossless audio. Using the 3.5mm cable doesn't require battery power.
Are they comfortable to wear for a long time or with glasses?
Many users report they become uncomfortable after 1-2 hours due to the on-ear pressure. People who wear glasses are particularly likely to find the clamping force uncomfortable as it presses the frames into their head.
How is the battery life?
The battery life is excellent, rated for up to 50 hours of wireless playback. A 10-minute "Fast Fuel" charge gives you up to 5 hours of listening time.
How do they work with Android phones?
They are fully compatible with Android, offering Google Fast Pair for easy connection. There is a Beats app for Android, but users report it has very limited functionality.
Do the buttons work when used in wired mode on Android?
The playback controls work when connected via a USB-C cable, but they do not work when using the 3.5mm audio jack.
How are they different from the Beats Solo 3?
The Solo 4 has a more balanced, less bass-heavy sound, significantly longer battery life (50 vs 40 hours), and uses USB-C for charging instead of Micro-USB. However, the Solo 4 does not fold up like the Solo 3 does.
Buying Guide
The most important thing to understand about the Solo 4 is the 'on-ear' design. This means the cushions press directly *on* your ear cartilage, unlike 'over-ear' models that surround your ear. This is a love-it-or-hate-it comfort issue, so if you're sensitive to pressure, be cautious. For this type of headphone, you're trading noise isolation and long-term comfort for a smaller size and lighter weight. Pay close attention to battery life and charging speed, as these are huge convenience factors for a portable headphone.
On-Ear Design
Think of it like wearing a hat that's a little too tight. It's fine for a bit, but after a while, you feel the pressure. On-ear headphones are smaller and more portable, but that pressure on your ears can become uncomfortable much faster than with larger, over-ear models.
50-Hour Battery Life
This is like having a phone that lasts for three full days instead of one. You just don't have to think about charging it all the time. You can take it on a long weekend trip and not even pack the charging cable.
No Active Noise Cancellation (ANC)
ANC is like having a 'mute' button for the world around you. It uses microphones to cancel out low-frequency noise like a plane engine or the rumble of a bus. Without it, you'll have to turn the volume up to overcome that noise, and you'll still hear it.
Personalized Spatial Audio
This is like having a mini home theater system in your headphones. When you're watching a movie on a compatible device and turn your head, the sound still feels like it's coming from the screen. It makes the experience more immersive.
Alternatives
If you need headphones for long flights or find on-ear pressure uncomfortable, search for 'over-ear wireless headphones with Active Noise Cancellation (ANC)' for better comfort and noise isolation.
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