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Cylindrical black fabric Bluetooth speaker with flat ends and hanging loop

Ultimate Ears

Ultimate Ears 984-001348 portable speaker

SKU CH-KW7E-2B3W5 MPN 984-001348

Waterproof, dustproof 360-degree Bluetooth speaker delivers up to 15 hours of playback and floats in water

  • ColorBlack
  • Speaker TypeBluetooth Speaker
  • SpecificationMaximum Sound Level: 90dBA. Frequency Range: 90Hz - 20kHz. D
  • CompatibilityFor Audio Playback: Smartphones, tablets and other devices t
  • Wireless TechnologyBluetooth
  • Operating Range150 ft.
  • 360° sound fills every direction with two 2" drivers and passive radiators
  • IP67 rating survives full water submersion for 30 minutes and floats
  • 15-hour battery keeps music playing all day on one charge
  • Magic Button controls play, pause and skip without reaching for your phone
  • 150 ft wireless range lets you roam far from the source device

What the speaker is and who it fits

The Ultimate Ears Boom 3 is a compact Bluetooth speaker finished in Night Black. It plays audio from any phone or tablet that supports the A2DP profile or a 3.5 mm jack, so casual listeners and outdoor enthusiasts get a grab-and-go sound source without pairing hassle. Buyers who need multi-room synchronisation or voice-assistant integration will not find those features here.

Capacity and headroom

Two 2-inch drivers and matching passive radiators deliver a frequency range of 90 Hz to 20 kHz at a maximum output of 90 dBA. The battery provides up to 15 hours of playback, and the IP67 rating means the speaker survives full submersion for 30 minutes while floating. At 150 ft wireless range the signal holds across a typical garden, but larger venues will exceed its comfortable coverage.

What the bundled extras change

A dedicated Magic Button on top handles play, pause and track skip so the phone can stay in a pocket. The two-tone performance fabric resists abrasion from sand, dust and repeated drops tested over 25 durability cycles. Up to eight source devices can be remembered and two kept connected simultaneously, letting friends swap tracks without re-pairing.

Highlights

  • 360° sound fills every direction with two 2" drivers and passive radiators
  • IP67 rating survives full water submersion for 30 minutes and floats
  • 15-hour battery keeps music playing all day on one charge
  • Magic Button controls play, pause and skip without reaching for your phone
  • 150 ft wireless range lets you roam far from the source device

Specifications

BrandUltimate Ears
Model984-001348
ColorBlack
Speaker TypeBluetooth Speaker
SpecificationMaximum Sound Level: 90dBA.
Frequency Range: 90Hz - 20kHz.
Drivers: Two 2" drivers and two 2" x 4" Passive Radiators.
Pair up to 8 Bluetooth enabled source devices - Connect up to two source devices at the same time. Mobile range of play is up to 45m (150 ft).
Rechargeable Lithium-Ion Battery for up to 15 hours of battery life between Micro USB charges.
CompatibilityFor Audio Playback: Smartphones, tablets and other devices that support Bluetooth and Bluetooth Smart wireless audio profile [Advanced Audio Distribution Profile (A2DP)] or 3.5 mm audio output. For Phone Calls: Phones that support Bluetooth Hands-Free Profile (HFP1.5)
Wireless TechnologyBluetooth
Operating Range150 ft.
Playback Time (up to)Up to 15 hours
FeaturesLOUD AND TRUE
BOOM 3 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.
SPATIAL 360 degree SOUND
In BOOM 3 we've perfected the iconic cylindrical design we pioneered to deliver immersive, stereophonic audio that radiates evenly in all directions.
DEEP ACCURATE BASS
Unlike most portable speakers, BOOM 3 gives your music a deep, rich bass texture that's true to your music. Without exaggeration or distortion.
VIRTUALLY INDESTRUCTIBLE
BOOM 3 is purpose built to
Dimensions7.20" x 2.80" (H x Dia.)
Weight1.34 lbs.
Shipping weight0.82 kg
Package size183 × 74 × 74 mm

Questions about this item

Will the 3.5 mm input let me keep using my older MP3 player with this speaker?

Yes, the speaker includes a 3.5 mm audio input for wired playback from devices that do not support Bluetooth.

How can I confirm the IP67 rating is holding up after a few weeks outdoors?

The speaker should still float and show no water ingress after a 30‑minute submersion test; buttons and fabric must remain fully functional.

Does the box include a wall charger or only the USB cable?

The package contains the speaker and a micro‑USB charging cable; a USB power adapter is not included and must be purchased separately.

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