We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Compact grey cylindrical Bluetooth speaker with fabric wrap and carrying loop

Ultimate Ears Wonderboom 4 984-001879 Grey Portable Speaker

SKU CH-FSK1-BYQ8R

Waterproof, dustproof and floating speaker delivers 360-degree sound with 14-hour battery life and 40-metre Bluetooth range

  • NameWonderboom 4
  • ColorGray
  • Speaker TypeOutdoor
  • ConnectivityBluetooth
  • Input PortsBluetooth
  • Operating Range40 meters
  • Balanced 360-degree sound from a compact 2.0 speaker
  • Outdoor Boost and Podcast Mode tailor audio for open spaces and vocals
  • Up to 14 hours of playtime on a single charge
  • IP67 waterproof, dustproof and floatable for pool or shower use
  • 40-meter Bluetooth range with drop-proof durability and carry loop

Ultimate Ears Wonderboom 4 Grey Speaker

The Ultimate Ears Wonderboom 4 is a compact portable speaker built for outdoor use. It delivers balanced 360-degree sound with an outdoor boost mode and a dedicated podcast EQ. The speaker is IP67 rated for water and dust resistance and floats in water.

Bluetooth Range And Stereo Pairing Limits

The speaker connects via Bluetooth with an operating range of 40 meters. You can pair two Wonderboom 4 units for stereo sound with left and right channels. This double up feature is not compatible with the PartyUP system used on other models.

Check Your Device And Charging Setup

The speaker charges via USB-C cable which is not included in the box. Google Fast Pair allows quick Bluetooth pairing with Android devices running version 6.0 or higher. Verify that your source device supports standard Bluetooth audio streaming.

Highlights

  • Balanced 360-degree sound from a compact 2.0 speaker
  • Outdoor Boost and Podcast Mode tailor audio for open spaces and vocals
  • Up to 14 hours of playtime on a single charge
  • IP67 waterproof, dustproof and floatable for pool or shower use
  • 40-meter Bluetooth range with drop-proof durability and carry loop

Specifications

BrandUltimate Ears
NameWonderboom 4
Model984-001879
Part Number984-001879
ColorGray
Speaker TypeOutdoor
ConnectivityBluetooth
Input PortsBluetooth
Operating Range40 meters
Speaker Configuration2.0
Amplification TypeActive
Response Bandwidth0 GHz
Dimensions4.0 in x 4.0 in x 8.0 in
Package ContentsWonderboom 4 Gray

Questions about this item

Is the Wonderboom 4 sold in different colours or capacities?

The speaker is offered in Gray only; there are no alternative colours or storage capacities to choose from.

What does the 14-hour playtime figure mean for daily use?

A full charge delivers up to 14 hours of continuous audio before the speaker needs recharging via USB-C.

How does the IP67 rating affect real-world durability?

IP67 means the unit survives immersion in 1 m of water for 30 minutes, resists dust completely, and floats if dropped in a pool.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.