# Stereo portable speaker Ultimate Ears WONDERBOOM 4 — Bluetooth, 40 m range, passive radiator 46.1×65.2 mm, 87 dB, blue, cylinder

**URL:** https://aio.lv/en/product--ultimate-ears-984-001895--11695191
**Data updated:** 2026-02-20 09:15 (EET)
**Category:** Portable Speakers
**Manufacturer:** ultimate ears
**Manufacturer code:** 984-001895
**EAN:** 5099206115279
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 79.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 66.11 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ultimate-ears-984-001895--11695191

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

The Ultimate Ears WONDERBOOM 4 is a stereo portable speaker in a compact cylindrical design. It offers wireless Bluetooth connectivity (A2DP) with up to 40 m range and a single speaker driver plus a passive radiator sized 46.1 × 65.2 mm. Maximum sound pressure level is 87 dB. Weighing 0.42 kg and finished in blue, it is suited for universal everyday use — indoor listening, small gatherings and outdoor portability.

## Long description

The Ultimate Ears WONDERBOOM 4 is a stereo portable speaker in a compact cylindrical design, finished in blue and weighing 0.42 kg. It delivers a single full-range driver with a passive radiator sized 46.1 × 65.2 mm and a maximum sound pressure level of 87 dB. The speaker connects wirelessly via Bluetooth (A2DP) with up to 40 m range and supports quick one‑tap pairing with compatible Android devices. Designed for everyday portability, the WONDERBOOM 4 offers up to 14 hours of playback, IP67 dust and water protection, floatation in water, and impact resistance to drops of up to 5 feet.
Advantages
The speaker combines compact size with a larger-than-expected stereo sound and pronounced bass thanks to its passive radiator. Outdoor Boost mode optimizes audio for open environments, while a dedicated Podcast Mode improves vocal clarity for spoken-word content. Long battery life and a robust IP67 rating make the speaker suitable for both indoor listening and outdoor activities, and the ability to pair two units enables true left/right stereo playback.
Suitable for
Portable music listening at home, in the park, or on trips
Small social gatherings and outdoor parties
Podcasts, spoken-word content, and voice-forward audio
Poolside, beach, hiking, and shower use thanks to IP67 protection and floatation
Quick pairing and paired stereo use with a second WONDERBOOM 4
Key specifications
Speaker type: stereo portable speaker, cylindrical enclosure
Driver configuration: single driver with passive radiator (46.1 × 65.2 mm)
Maximum sound pressure level: 87 dB
Wireless: Bluetooth (A2DP), up to 40 m range
Battery: rechargeable Lithium‑Ion, up to 14 hours playback
Protection: IP67 dust and water resistant; floats in water
Durability: drop resistance up to 5 feet
Weight: 0.42 kg
Color: blue
How to use
Charge the speaker fully before first use using the supplied charging cable. Turn the speaker on and enable Bluetooth on your source device, then use one‑tap pairing on compatible Android devices or select the WONDERBOOM 4 from the Bluetooth menu to establish a connection. Use the onboard controls to play, pause, adjust volume, and activate Outdoor Boost or Podcast Mode as needed. To create a wider stereo image, power on two WONDERBOOM 4 speakers, pair each to the source and press the pairing button once to link them, then press again to switch to two‑channel left/right stereo.
Usage recommendations
For best vocal clarity when listening to podcasts, enable Podcast Mode. Use Outdoor Boost when listening in open spaces to maintain presence and bass. Rinse the speaker with fresh water after exposure to salt water and ensure charging ports are dry before plugging in. Avoid exposing the speaker to excessive heat and allow the battery to fully charge periodically to preserve battery health.

## Specifications

### Ports & interfaces

| Feature | Value |
|---|---|
| Connectivity technology | Wireless |
| USB connector type | USB Type-C |
| Bluetooth | Yes |
| AUX in | No |
| Bluetooth range | 40 m |
| USB connectivity | Yes |
| USB charging port | Yes |
| 3.5 mm connector | No |

### Design

| Feature | Value |
|---|---|
| Product colour | Blue |
| Volume control | Buttons |
| Product design | Cylinder |
| On/off switch | Yes |
| Hook | Yes |
| Product type | Stereo portable speaker |

### Packaging content

| Feature | Value |
|---|---|
| Cables included | USB Type-C |
| Quick start guide | Yes |

### Performance

| Feature | Value |
|---|---|
| Recommended usage | Universal |

### Battery

| Feature | Value |
|---|---|
| Battery technology | Lithium-Ion (Li-Ion) |

### Loudspeakers

| Feature | Value |
|---|---|
| Number of drivers | 4 |
| Number of speakers | 1 |
| Number of passive radiators | 2 |
| Passive radiator size (W x D) | 46.1 x 65.2 |

### Power

| Feature | Value |
|---|---|
| Battery type | Built-in battery |
| Battery life (max) | 14 h |

### Logistics data

| Feature | Value |
|---|---|
| Harmonized System (HS) code | 8518220090 |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.42 kg |
| Height | 104 mm |
| Width | 95.3 mm |
| Depth | 95.3 mm |

### Audio

| Feature | Value |
|---|---|
| Sound pressure level (max) | 87 dB |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 580 g |
| Package depth | 132 mm |
| Package height | 115 mm |
| Package width | 118 mm |

### Features

| Feature | Value |
|---|---|
| LED indicators | Bluetooth |
| Wi-Fi | No |
| Bluetooth profiles | A2DP |

## FAQ

### How much does the Ultimate Ears WONDERBOOM 4 984-001895 cost, and is it available for purchase?

The price is 79.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 15 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 08.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Ultimate Ears WONDERBOOM 4 984-001895 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All ultimate ears products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized ultimate ears service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: weight, number of speakers, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/11695191/67068637_large.webp