1 / 7Ultimate Ears Boom 4 Portable Bluetooth Speaker, Waterproof, Black
Black: The Ultimate Ears Boom 4 is a portable Bluetooth speaker listed with waterproof protection, 360-degree sound and a claimed 15-hour battery life. Its app-based EQ and one-touch controls add flexibility, while reported mixed experiences with battery life and connectivity are worth weighing for travel or outdoor use.
At a glance
- Manufacturer material describes balanced 360-degree sound and deep bass in a portable format.
- The listing claims up to 15 hours of battery life, with actual life varying by use, settings and environment.
- The BOOM app is described as supporting four EQ modes and PartyUp pairing with selected Ultimate Ears speakers.
- A Magic Button can be configured for one-touch playlists on supported music services.
Reference price: $178.99
Price checked: Nov 13, 2026
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Pros and cons
Pros
- Portable form and 360-degree sound are suited to moving between rooms or outdoor gatherings.
- App EQ modes and the Magic Button provide ways to adjust sound and control music without reaching for the phone.
- PartyUp is claimed to pair the speaker with selected BOOM, MEGABOOM, EVERBOOM, EPICBOOM and HYPERBOOM models.
Technical specifications
23 specifications| Brand | Ultimate Ears |
|---|---|
| Model | Boom 4 |
| Colour | Black |
| Model number | 984-001963 |
| Wireless connection listed | Bluetooth |
|---|---|
| Audio output mode | Mono or Stereo |
| Speaker type | Outdoor |
| Driver type | Dynamic Driver |
| Maximum output power listed | 80 watts |
| Frequency response listed | 17 KHz |
| Control methods listed | App |
|---|---|
| Bluetooth range listed | 45 meters |
| Power configuration | Battery Powered |
|---|---|
| Battery life listed | 15 hours |
| Battery charge time | 3 hours |
| Battery capacity listed | 3200 |
| Battery type and requirement | 1 Lithium Polymer batteries required. |
| Mounting types listed | Tabletop |
|---|---|
| Dimensions listed | 7.29 x 7.29 x 18.42 cm; 620 g |
| Weight listed | 620 g |
| Water resistance listed | Waterproof |
|---|---|
| Enclosure material | Recycled plastic |
| Additional features listed | Dustproof, Portable, Shockproof, Stereo Pairing, Waterproof |
What to know before buying
Listing details to confirm
Listing details are inconsistent or unconfirmed: protection is described as IPX7 in one feature and IP67 in another, while another entry only says waterproof. The output mode says Mono or Stereo, but a separate channel field says 5.1. The speaker dimensions are also listed as both 10D x 10W x 20H centimetres and 7.29 x 7.29 x 18.42 cm. Confirm the intended specification before purchase. Battery life and Bluetooth range are claims that can vary with conditions and connected devices.
Who is it for?
A good fit for
- Listeners seeking a portable Bluetooth speaker for travel, tabletop use or outdoor gatherings.
- Buyers who want app-based EQ, one-touch music controls and pairing with compatible Ultimate Ears speakers.
Less suited to
- Buyers who require a clearly stated, consistent protection rating or guaranteed battery runtime.
- Buyers needing confirmed multichannel home-theatre performance, since the channel and output-mode details conflict.
Customer reviews on Amazon
- 5 stars
73% 73% - 4 stars
6% 6% - 3 stars
5% 5% - 2 stars
7% 7% - 1 star
9% 9%
Customer feedback highlights good overall sound and ease of use, with positive remarks about value. Experiences are mixed for battery life, reliability and connectivity. For buyers choosing a portable speaker for outings, those concerns matter because the listing claims 15 hours of battery life and a 45-metre Bluetooth range, but neither should be treated as assured in every setting.
Positive themes
- Customers report good overall sound quality and ease of use.
- Some customer feedback considers the speaker worthwhile for the money.
Mixed feedback
- Customers report mixed experiences with battery life, reliability and connectivity.
Frequently asked questions
How long does the Boom 4 battery last?
The listing claims 15 hours per charge, but says actual battery life may vary with use, settings and environmental conditions. Customer feedback also reports mixed experiences with battery life.
Is the Boom 4 waterproof?
Waterproofing is claimed, but the listing gives conflicting protection details: IPX7 in one place and IP67 in another. Confirm the applicable rating for the offered model before relying on it.
Can it pair with other Ultimate Ears speakers?
The listing describes PartyUp pairing with selected BOOM, MEGABOOM, EVERBOOM, EPICBOOM and HYPERBOOM speakers. It says WONDERBOOM and MINIROLL are not compatible.
Does the Boom 4 provide stereo or 5.1 audio?
The listing conflicts, describing the output mode as Mono or Stereo while also listing 5.1 channels. Do not assume a particular multichannel configuration without confirmation.
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