Introduction
The Ultimate Ears BOOM 4 is an ultra-portable, waterproof Bluetooth speaker designed for adventure. It delivers balanced 360-degree sound with deep, accurate bass. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your BOOM 4 speaker.

Image: The Ultimate Ears Boom 4 speaker in an outdoor setting, highlighting its portable design.
What's in the Box
Verify that all items are present in the packaging:
- Ultimate Ears BOOM 4 Portable Bluetooth Speaker
- Elastic Cord (attached to the product)
- Quick Start Guide (printed inside the box)
- USB-C Charging Cable (not explicitly listed but implied for a rechargeable device)
Speaker Overview
Familiarize yourself with the buttons and ports on your BOOM 4 speaker.

Image: A detailed diagram illustrating the location of the Bluetooth pairing button, Magic Button, Power On/Off button, Volume Up/Down buttons, and the USB-C charging port on the Ultimate Ears Boom 4 speaker.
- Bluetooth Pairing Button: Located on the top, used to initiate Bluetooth pairing.
- Magic Button: Located on the top, controls playback and playlist access.
- Power On/Off Button: Located on the top, turns the speaker on or off.
- Volume Buttons (+/-): Large buttons on the front mesh for adjusting volume.
- USB-C Charging Port: Located at the bottom, used for charging the speaker.
Setup
1. Charging Your Speaker
Before first use, fully charge your BOOM 4 speaker. Connect the provided USB-C charging cable to the charging port at the bottom of the speaker and to a USB power adapter (not included). The LED indicator will show charging status.
- A full charge provides approximately 15 hours of playback.

Image: The Ultimate Ears Boom 4 speaker in a relaxed outdoor setting, emphasizing its 15-hour battery life.
2. Powering On/Off
Press the Power On/Off button located on the top of the speaker to turn it on or off. A sound indicator will confirm the action.
3. Bluetooth Pairing
- Turn on your BOOM 4 speaker.
- Press and hold the Bluetooth pairing button on the top of the speaker until you hear a tone and the LED indicator flashes rapidly.
- On your mobile device (smartphone, tablet, etc.), go to the Bluetooth settings and select "Ultimate Ears BOOM 4" from the list of available devices.
- Once paired, you will hear a confirmation tone, and the LED indicator will glow solid.
The BOOM 4 has a wireless range of up to 45 meters (150 feet).
4. Ultimate Ears BOOM App
Download the Ultimate Ears BOOM app for additional features, including:
- Customizable EQ: Adjust sound profiles to your preference.
- PartyUp: Connect multiple Ultimate Ears speakers for a louder, more immersive sound experience.
- Remote Control: Control your speaker from a distance.
Operating Instructions
Volume Control
Press the large '+' or '-' buttons on the front of the speaker to adjust the volume.
Magic Button Functions
- Single Press: Play/Pause audio.
- Double Press: Skip to the next track.
- Long Press: Access your favorite playlists from streaming services like Spotify (Android) or Apple Music (iOS) after setting them up in the BOOM app.
PartyUp Feature
Use the PartyUp feature in the Ultimate Ears BOOM app to connect your BOOM 4 with other compatible Ultimate Ears Bluetooth speakers (MEGABOOM, EVERBOOM, EPICBOOM, HYPERBOOM) for synchronized audio playback.

Image: Several Ultimate Ears speakers, including the Boom 4, placed around an outdoor fire pit, demonstrating the PartyUp feature for multi-speaker audio.
Waterproof and Durable Design
The BOOM 4 is IPX7 rated, meaning it can be immersed in water up to 1 meter (3.3 feet) for 30 minutes. It is also resistant to drops up to 1.5 meters (5 feet) and floats, making it ideal for outdoor and poolside use.

Image: People enjoying a pool party with Ultimate Ears Boom 4 speakers, illustrating the speaker's waterproof (IPX7) and drop-resistant design.
Maintenance
- Cleaning: To clean your BOOM 4, use a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Drying After Water Exposure: After immersion in water, ensure the speaker is completely dry before charging to prevent damage to the USB-C port.
- Storage: Store the speaker in a cool, dry place when not in use. Avoid extreme temperatures.
- Battery Care: For optimal battery life, avoid fully discharging the speaker frequently. Charge it regularly.
Troubleshooting
| Problem | Solution |
|---|---|
| Speaker does not turn on. | Ensure the battery is charged. Connect the speaker to a power source using the USB-C cable. |
| Cannot pair with Bluetooth device. |
|
| No sound or low volume. |
|
| Audio cutting out or distorted. |
|
Specifications
| Feature | Detail |
|---|---|
| Brand | Ultimate Ears |
| Model Name | Ultimate Ears BOOM 4 |
| Model Number | 984-001969 |
| Connectivity Technology | Bluetooth |
| Wireless Range | Up to 45 meters (150 feet) |
| Maximum Speaker Output Power | 12 Watts |
| Audio Output Mode | Surround |
| Speaker Type | Outdoor |
| Material | Plastic (at least 52% post-consumer recycled plastic) |
| Water Resistance Level | IPX7 (Waterproof) |
| Battery Life | Up to 15 hours |
| Control Method | Tactile (Buttons) |
| Dimensions (D x W x H) | 12.3 x 10.3 x 20 cm (approx. 4.8 x 4.1 x 7.9 inches) |
| Compatible Devices | Smartphone, Tablet, other Bluetooth-enabled devices |
| Power Source | Battery Powered (1 Lithium-ion battery included) |
| Signal-to-Noise Ratio | 85 dB |

Image: The Ultimate Ears Boom 4 speaker with icons indicating its construction from recycled plastic and responsible packaging, reflecting a positive design philosophy.
Warranty and Support
Warranty Information
The Ultimate Ears BOOM 4 comes with a 2-year manufacturer's warranty. Please retain your proof of purchase for warranty claims.
Customer Support
For further assistance, technical support, or warranty inquiries, please visit the official Ultimate Ears support website or contact their customer service. Refer to the Quick Start Guide for specific contact details in your region.
You can also find more information and FAQs on the Ultimate Ears Brand Store on Amazon.