SOUND SYSTEMS

BOLD SOUND BOLDY PORTABLE
BOOM 4 packs a sonic punch for its size. Featuring Ultimate Ears unique audio processing, it produces clear and balanced audio faithful to the music you love, and at every volume level.

VIRTUALLY INDESTRUCTIBLE
BOOM 4 was born to hit the road. From rooftop-raging to mountaintop-shredding, BOOM 4's got your back. It’s IP67 rated, waterproof, floatable and drop-proof. Take it anywhere. It's more powerful than you expect.

UP TO 15-HOUR BATTERY LIFE
BOOM 4 gives you 15 hours* of sonic power on a single charge.This portable speaker has long battery life that keeps the party going.
*Actual battery life will vary with use, settings, and environmental conditions. Playing music at high volume or with bass boost can drain the battery faster.

CONNECT AND PARTYUP
Use PartyUp* on the UE | BOOM App to pair 1, 2 , 3... and over 150 speakers and create the ultimate sound experience. You can combine multiple BOOM 4, MEGABOOM 4, EVERBOOM, EPICBOOM and HYPERBOOM speakers or even pair them with previous generation BOOM speakers. Build a wall of sound? No problem.

MAGIC BUTTON ONE-TAP CONTROL
One tap to dive in. Play, pause, and skip tracks directly from your BOOM 4. Set up one-touch playlists on your favorite streaming platforms, such as Spotify®, Amazon Music for Android, and Amazon Music and Apple Music for iOS.

MADE WITH RECYCLED PLASTIC
Plastic parts in BOOM 4 include a minimum of 52% certified post-consumer recycled plastic* by weight. It’s also designed for recycling.
*Excluding packaging

SPATIAL 360° SOUND
With the iconic cylindrical design, we pioneered to deliver immersive, stereophonic audio that radiates evenly in all directions.

DEEP ACCURATE BASS
BOOM 4 gives your music a deep, rich bass. Enjoy the punchy bass without exaggeration or distortion.

SIGNATURE + 4 PRE-SET EQ MODES
Enjoy the Ultimate Ears Signature sound and several EQ modes like Bass Boost, Cramped Space, Deep Relaxation, and Podcast/Vocal from UE | BOOM App. Didn’t find your favorite? Customize it yourself.

Loudspeakers
Number of speakers: 1
Number of drivers: 2
Number of passive radiators: 2
Passive radiator size (W x D): 46.1 x 65.2 mm
Driver diameter: 4 cm
Audio
Sound pressure level (max): 85 dB
Ports & interfaces
Connectivity technology: Wireless
Feature: Bluetooth
Bluetooth profiles: A2DP
Bluetooth range: 45 m
Feature: USB charging port
Design
Product type: Stereo portable speaker
Product design: Cylinder
Product colour: Lilac
Housing material: Plastic, Recycled plastic
Volume control: Buttons
Protection features: Dustproof, Dirt resistant, Waterproof, Splash proof
Feature: Carrying handle(s)
International Protection (IP) code: IP67
Performance
Recommended usage: Universal
Feature: Equalizer
Power
Power source type: Battery, USB
Battery type: Built-in battery
Battery life (max): 15 h
Feature: USB Type-C charging port
Weight & dimensions
Width: 73 mm
Depth: 73 mm
Height: 184 mm
Weight: 620 g
Packaging content
Feature: Quick start guide
Battery
Battery technology: Lithium-Ion (Li-Ion)
Technical details
Compliance certificates: CE, EAC, UKCA
Logistics data
Warranty period: 2 year(s)