Where the Boom 4 fits your day
- Amazon price
- $109.99
- Customer rating
- 4.2
- Customer reviews
- 861
- Typical price over 90 days
- $136.53
- Difference
- $26.54 (19 percent)
The Ultimate Ears Boom 4 Portable Bluetooth Speaker suits listeners who move between rooms and yards with a phone as the source. It spreads sound in all directions rather than aiming one cone at a seat, which works on a kitchen counter, a patio table or a picnic blanket where nobody wants to claim the sweet spot.
Its cylinder shape measures 2.87 x 2.87 x 7.25 inches, so it stands upright on a shelf or slips into a bag pocket. That footprint is small enough to relocate without a second thought, which is the point of a portable speaker.
We'd consider this a sensible pick at $109.99 if your listening happens away from a wall outlet. The 19 percent gap from the $136.53 typical price over the last 90 days is the reason to look now rather than later.
Bluetooth range, charging and the app
Pairing is Bluetooth, and Ultimate Ears rates the working range at 45 meters, or 147 feet. That is enough distance to leave your phone inside while the speaker sits by the grill, though walls and interference will shorten the practical span.
Charging runs through USB-C, and the cable is not in the box. Pick one up with the speaker if you do not already have a spare, because the rechargeable battery is rated for 15 hours per charge and you will be topping it up regularly.
The Magic Button on the speaker handles play, pause and track skipping, and it can launch one-touch playlists in streaming services on supported phones. PartyUp in the Ultimate Ears Boom app links several UE speakers together, including BOOM, MEGABOOM, EVERBOOM, EPICBOOM and HYPERBOOM models.
Which rooms and trips suit it
The speaker carries an IP67 waterproof rating, meaning it is built to shrug off dust and full immersion, and Ultimate Ears says it floats. If your routine includes pool edges, boat decks or a shower shelf, that rating is the capability doing the work here, and the drop rating of up to 15 feet adds margin for clumsy handling on concrete.
Skip it if you want a stereo pair for critical listening at a desk, since this is a single portable unit and PartyUp relies on other compatible UE speakers you may not own. Check that you already have a USB-C cable, and confirm the app is available on your phone before buying.
Its plastic parts use a minimum of 52 percent post-consumer recycled material by weight, which is a small plus if that matters to you.
The rating sits at 4.2 from 861 reviews, so read the recurring complaints before committing.
Pair it with a USB-C cable at checkout, since none is included.
Spec sheet
| Model | 984-002009 |
|---|---|
| Color | Lilac |
| Size | 2.87 x 2.87 x 7.25 Inches |
