Ultimate Ears Boom 4 Portable Bluetooth Speaker, Blue

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Product guide

Ultimate Ears Boom 4 Portable Bluetooth Speaker, Blue

The Ultimate Ears Boom 4 is a portable Bluetooth speaker with claimed 360-degree sound and waterproof, dustproof protection for outdoor listening. Its listed 15-hour battery life and USB-C charging support travel use, though the charging cable is not included.

At a glance

Claimed 360-degree sound in a portable format.
IP67 waterproof and dustproof claim, with a stated drop-protection claim.
Manufacturer lists 15 hours of battery life and USB-C charging. The USB-C cable is not included.
PartyUp can pair it with select Ultimate Ears speakers. WONDERBOOM and MINIROLL are explicitly excluded.
Magic Button supports music playback controls and configurable one-touch playlists through supported services.

Price

$114.99Save 23%

Reference price: ~~$149.99~~

Price checked: Nov 14, 2026

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Often bought together

Lebakort Storage Case Compatible with Ultimate Ears UE Boom 4 3 Speaker | Lightweight & Carry, Dustproof Storage, Travel Friendly, Portable for Daily Use, Blue Case

$19.99

USB C Charger Cable & Block for Ultimate Ears UE Wonderboom Megaboom Boom 4 | For Ultimate Ears UE Miniroll, Wonderboom 4 Play, Boom 4, Megaboom 4, Everboom, Epicboom & JBL 4 5 6 Charger Cord with Block

$14.95

Pros and cons

Pros

Portable size and claimed 360-degree sound suit moving between rooms or taking music outdoors.
Bluetooth connection and app control provide wireless playback and access to speaker settings.
PartyUp offers a way to group compatible Ultimate Ears speakers for broader playback.

Cons

USB-C charging cable is not included, so charging requires a separately available compatible cable.
The listed 10-watt maximum output may not suit buyers prioritizing high-output party sound.

Technical specifications

22 specifications

Identity
Brand	Ultimate Ears
Model	Boom 4
Color	Blue

Connectivity and controls
Wireless connection listed	Bluetooth
Control methods listed	App
Audio output mode	Stereo
Listed wireless range	45 meters

Audio
Maximum output power	10 watts
Frequency response	60 hertz
Driver type	Dynamic Driver

Power and battery
Power configuration	Battery Powered
Battery life listed	15 hours
Battery type and quantity	1 Lithium Polymer batteries required.
Charging connection	USB-C

Dimensions and installation
Mounting type listed	Tabletop Mount
Dimensions (D x W x H)	4"D x 4"W x 8"H

Materials and protection
Water resistance listed	Waterproof
Protection rating	IP67
Drop protection claim	15 feet (1.5 meters)
Enclosure material	Plastic
Recycled plastic claim	minimum of 52% post-consumer recycled plastic by weight

Warranty
Warranty description	1 Year Limited Hardware Warranty

What to know before buying

Listing details to confirm

The listing gives conflicting audio details: it names Stereo output in one field but lists 5.1 channels elsewhere, which does not establish a surround setup. Its generic battery-capacity field also says “15 hours,” a time rather than a capacity unit. IP67, floating, drop protection and 15-hour runtime are manufacturer claims, not independently confirmed performance.

Who is it for?

A good fit for

Listeners wanting a compact Bluetooth speaker for travel, casual outdoor use or tabletop listening.
Buyers who value a water-resistant design claim and the option to group compatible Ultimate Ears speakers.

Less suited to

Buyers who require a charging cable in the box.
Listeners seeking a clearly specified multichannel home-theater system or high-output party speaker.

Ultimate Ears Boom 4 Portable Bluetooth Speaker, Blue · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 937 ratings

5 stars74%74%
4 stars7%7%
3 stars5%5%
2 stars6%6%
1 star8%8%

Customer feedback often highlights sound quality, Bluetooth connectivity and portability, with the small footprint relevant to travel and tabletop use. Battery life, durability, charging and value draw mixed reactions. That matters alongside the listed 15-hour runtime and USB-C charging claim, particularly because the cable is not included. Aggregate ratings lean positive overall but do not resolve these differing experiences.

Positive themes

Customers highlight sound quality, connectivity and portability.

Mixed feedback

Battery life, durability, charging capability and value receive mixed feedback.

Frequently asked questions

Does the Boom 4 include a USB-C charging cable?

No. The listing says it charges via USB-C and specifies that the cable is not included.

How long is the listed battery life?

The listing claims 15 hours on a charge. Customer feedback is mixed on battery life, so actual results may differ.

Can it pair with other Ultimate Ears speakers?

The PartyUp feature is listed for select BOOM, MEGABOOM, EVERBOOM, EPICBOOM and HYPERBOOM speakers. The listing excludes WONDERBOOM and MINIROLL.

Is this a 5.1-channel speaker?

The listing is inconsistent: one specification says Stereo, while another says 5.1. Check the selected product details if channel configuration matters.