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Small blue cylindrical speaker with a carrying loop

Ultimate Ears Wonderboom 4 984-001877 Blue portable speaker

SKU CH-PTDJ-YYFN8

Waterproof Bluetooth speaker delivers 360-degree sound with 14-hour battery life, IP67 rating, and 40-metre range

  • Product nameWonderboom 4
  • Connection optionsBluetooth
  • Speaker categoryOutdoor
  • Input sourcesBluetooth
  • Operating distance40 m
  • Speaker setup2.0
  • 360-degree sound fills every direction with balanced audio
  • Outdoor Boost and Podcast Mode tailor EQ for open spaces and clear vocals
  • Up to 14 hours of playtime keeps the music going all day
  • IP67 waterproof, dustproof and floatable survives immersion and harsh conditions
  • 40-metre Bluetooth range lets you roam free while staying connected

Wonderboom 4 portable speaker

The Wonderboom 4 is a compact outdoor speaker that delivers 360-degree sound through a 2.0 active configuration. It connects via Bluetooth with an operating range of 40 meters and is built for users who want a durable, grab-and-go audio companion. The IP67 rating means it survives submersion in one metre of water for 30 minutes and resists dust, making it suitable for pool, beach or shower use.

Battery life and thermal behaviour

A rechargeable battery provides up to 14 hours of playtime on a single charge so the speaker runs through a full day without needing a cable. Because it is a low-power Bluetooth device, it generates negligible heat and operates silently with no audible fan or coil noise during normal listening. Power draw remains modest and is handled entirely by the internal cell, charged through a USB-C port.

Outdoor Boost, Podcast Mode and pairing

Pressing the Outdoor Boost button engages a special EQ tuned for open-air environments, while the new Podcast Mode shapes vocals for richer, clearer spoken-word playback. Two Wonderboom 4 units can be paired with a single press for louder mono output, and a second press activates true wireless stereo with left and right channels. Google Fast Pair enables one-tap Bluetooth setup on Android 6.0 and above.

How it compares

Measured against everything we stock in Bluetooth & Party Speakers, at today’s prices. Recalculated every night.

Price $81.99
Pricier than about 79% of the 862 comparable items (median $39.99).

Specifications

Product
Brand nameUltimate Ears
Model name984-001877
Part number984-001877
Product nameWonderboom 4
Product colorBlue
Audio & video
Speaker categoryOutdoor
Speaker setup2.0
AmplificationActive
Frequency response75 Hz
Connectivity
Connection optionsBluetooth
Operating distance40 m
Ports & slots
Input sourcesBluetooth
Size & build
Product dimensions4.0 in × 4.0 in × 8.0 in
In the box
In the boxWonderboom 4 Blue

Questions about this item

How do I pair the Wonderboom 4 with my Android phone using Google Fast Pair?

Enable Bluetooth on an Android device running 6.0 or later; the speaker will appear in a pop-up — tap once to connect without entering a code.

What charging cable does the speaker need and is it included?

It charges via USB-C; the cable is not included in the box, so you must supply your own.

How long can the Wonderboom 4 stay submerged before water damage becomes a risk?

The IP67 rating allows submersion in up to 1 metre of water for 30 minutes; longer or deeper exposure is not protected.

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