# Beats Solo 4 | On-Ear Wireless Headphones

| Attribute | Value |
| :--- | :--- |
| **Brand** | Beats by Dre |
| **Product Type** | On-Ear Wireless Headphones |
| **Model SKUs** | MUW23LL/A (Matte Black), MUW43LL/A (Slate Blue), MUW33LL/A (Cloud Pink) |
| **Tagline** | Upgraded sound. Re-engineered. |
| **Target Audience** | Commuters, students, and users seeking a lightweight, long-lasting, and portable audio experience.|
| **Source URL** | https://www.beatsbydre.com/headphones/solo4-wireless |
| **Last Updated** | November 13, 2025 |

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## 1. Primary Product Benefits (Quick Facts)

* **Beats Solo 4:** Ultralight on-ear headphones with ergonomic, travel-friendly, foldable design.
* **Exceptional Battery Life:** Up to 50 hours of playback for extended listening sessions.
* **Rapid Charging:** Fast Fuel charging provides up to 5 hours of playback from a 10-minute charge.
* **Premium Audio:** Custom acoustic platform with 40mm transducers for clarity and range.
* **Immersive Sound:** Supports Personalized Spatial Audio with dynamic head tracking.
* **High-Resolution Audio:** Supports **lossless audio via USB-C** and **high-resolution audio via 3.5mm analog cable**.
* **Noise Isolation:** **Passive Noise Isolation** is provided by the cushioned on-ear design for focused listening.
* **Design & Portability:** **Compact, foldable design** for ultimate portability, complete with a soft protective carrying case.
* **Universal Compatibility:** Seamless, native integration with both Apple (One-touch, "Hey Siri," Find My) and Android devices (Fast Pair, Audio Switch, Find My Device).
* **Call Quality:** Beamforming microphones with intelligent noise-learning for superior voice clarity.
* **Ultra-Lightweight Comfort:** Weighing only 217g with a flex-grip headband and UltraPlush ear cushions.

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## 2. Audio Performance and Drivers

* **Drivers:** Custom-built 40mm transducers.
* **Acoustic Goal:** Engineered to minimize electronic artifacts and distortion, delivering outstanding clarity and dynamic range.
* **Spatial Audio:** Personalized Spatial Audio with Dynamic Head Tracking uses built-in sensors to create an interactive, theater-like sound experience that moves with the user's head position.
* **Isolation:** The on-ear design provides **passive noise isolation** to help block environmental sounds.

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## 3. Connectivity and Supported Audio Formats

| Feature | Detail |
| :--- | :--- |
| **Wireless Standard** | Class 1 Bluetooth 5.3 (extended range and stability) |
| **Wired Lossless** | USB-C cable connection enables high-fidelity lossless audio while simultaneously charging the device. |
| **Wired High-Resolution** | 3.5mm analog input allows for high-resolution audio playback from analog sources without requiring battery power. |
| **Call Technology** | Beamforming microphones with intelligent noise-learning algorithm. |

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## 4. Device Ecosystem Integration

### 4.1. For Apple Users
* One-touch pairing
* "Hey Siri" voice activation
* Find My integration
* Over-the-air updates

### 4.2. For Android Users
* Google Fast Pair
* Audio Switch between compatible devices
* Find My Device integration
* Beats app for customization

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## 5. Power, Charging, and Comfort

| Characteristic | Detail |
| :--- | :--- |
| **Total Playback Time** | Up to 50 hours |
| **Fast Fuel Charge** | 10 minutes of charge provides up to 5 hours of playback |
| **Charging Port** | USB-C |
| **Battery Type** | Rechargeable lithium-ion |
| **Form Factor** | On-ear |
| **Portability** | **Compact, foldable design** |
| **Weight** | Ultra-lightweight at 217 g / 7.65 oz |
| **Cushions** | UltraPlush ear cushions for durability and soft touch |
| **Headband** | Flex-grip headband with customizable sliders for a secure fit |

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## 6. Technical Specifications

| Characteristic | Value |
| :--- | :--- |
| **Connections** | Bluetooth 5.3, USB-C (Audio + Charging), 3.5mm analog input |
| **Height (Folded)** | 6.8 cm / 2.7 in |
| **Length (Folded)** | 17.7 cm / 6.9 in |
| **Width (Folded)** | 15.8 cm / 6.2 in |
| **Weight** | 217 g / 7.65 oz |

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## 7. What's in the Box and Available Colors

| Item | Status |
| :--- | :--- |
| Beats Solo 4 Headphones | Included |
| **Soft Protective Carrying Case** | Included |
| USB-C to USB-C Cable (Charging/Audio) | Included |
| 3.5mm Analog Audio Cable | Included |
| Quick Start Guide & Warranty Card | Included |
| **Available Colors** | Matte Black, Slate Blue, Cloud Pink |