# Stereo portable speaker Ultimate Ears WONDERBOOM 4 Black

**URL:** https://aio.lv/en/product--logitech-984-001894--11233189
**Data updated:** 2025-12-04 04:45 (EET)
**Category:** Portable Speakers
**Manufacturer:** Logitech
**Manufacturer code:** 984-001894
**EAN:** 5099206115262
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 103.99 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 85.94 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--logitech-984-001894--11233189

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.99 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

The Ultimate Ears WONDERBOOM 4 is a compact stereo portable speaker in black, featuring a passive radiator size of 46.1 x 65.2 mm and a maximum sound pressure level of 87 dB. With wireless connectivity and a Bluetooth range of up to 40 meters, it is perfect for universal use. Its cylindrical design makes it easy to carry and enjoy high-quality sound anywhere you go.

## Long description

WONDERBOOM 4 is an ultraportable Bluetooth speaker delivering disproportionately big, clear sound with pronounced bass. It offers multiple listening modes including Outdoor Boost for enhanced open-air playback and a Podcast Mode tuned for crisp vocal clarity. The speaker features up to 14 hours of battery life, IP67 dust- and water-resistance with flotation capability, and one-tap Bluetooth pairing for Android devices. Two units can be paired for expanded volume or configured as a true left-right stereo pair. The design uses at least 31% certified post-consumer recycled plastic by weight.
Advantages
Compact and easy to carry while producing powerful, bass-rich audio. Long 14-hour battery life supports extended use away from power sources. IP67 rating ensures protection against dust and immersion; the speaker will float, allowing use at pools or beaches. Quick Bluetooth pairing simplifies connections with compatible Android devices. Dual-unit pairing gives either doubled output or full two-channel stereo playback. The enclosure includes a minimum of 31% certified post-consumer recycled plastic.
Key specifications
Product: WONDERBOOM 4 ultraportable Bluetooth speaker
Playback time: up to 14 hours
Wireless range: up to 40 meters
Durability rating: IP67 (dustproof and waterproof; floats)
Modes: Outdoor Boost, Podcast Mode (EQ for vocals)
Stereo: Pair two units for doubled output or left-right stereo
Drop resistance: survives drops from up to 5 feet
Materials: minimum 31% certified post-consumer recycled plastic by weight
Compatibility note: does not connect with WONDERBOOM 1, WONDERBOOM 2, BOOM, MEGABOOM, or HYPERBOOM
How to use
Charge the speaker before first use and power it on using the designated button. For Android devices, use the one-tap Bluetooth pairing feature to connect quickly; alternatively enable Bluetooth in your device settings and select WONDERBOOM 4. Choose Outdoor Boost for open-air listening or Podcast Mode for clearer spoken-word audio. To increase output, press the pairing button on two WONDERBOOM 4 units once to link them for boosted mono sound or press again to set left and right channels for stereo playback. Rinse and dry after exposure to salt water or sand and avoid submerging controls for prolonged periods.
Recommendations
Use Outdoor Boost when listening outdoors for improved projection. Select Podcast Mode for spoken-word content to enhance intelligibility. When taking the speaker to wet environments, rinse with fresh water and dry thoroughly; store charged if not used for extended periods. Do not attempt to pair WONDERBOOM 4 with incompatible models listed in the compatibility note.

## Specifications

### Design

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

### Power

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

### 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 |

### Battery

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

### Performance

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

### 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 |

### Packaging content

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

### Features

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

### 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 |

## FAQ

### How much does the Stereo portable speaker Ultimate Ears WONDERBOOM 4 984-001894 cost, and is it available for purchase?

The price is 103.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 13 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 15.07.2026 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. All transactions are 100% secure and encrypted.

### 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 Logitech 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 Logitech 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: number of speakers, weight, 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/11233189/63796356_large.webp