# Stereo portable speaker Ultimate Ears WONDERBOOM 4 Grey, Yellow

**URL:** https://aio.lv/en/product--logitech-984-001897--11346819
**Data updated:** 2025-12-30 21:09 (EET)
**Category:** Portable Speakers
**Manufacturer:** Logitech
**Manufacturer code:** 984-001897
**EAN:** 5099206115255
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 119.49 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 98.75 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--logitech-984-001897--11346819

## 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 featuring a unique cylindrical design in Grey and Yellow. It boasts a passive radiator size of 46.1 x 65.2 mm and delivers 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, making it an ideal companion for outdoor adventures or indoor gatherings.

## Long description

The Ultimate Ears WONDERBOOM 4 is a compact, ultraportable Bluetooth stereo speaker in grey and yellow that delivers bigger, bass-forward sound from a single small enclosure. It features a passive radiator (46.1 x 65.2 mm), up to 14 hours of playtime and a maximum sound pressure level of 87 dB. The speaker is IP67 rated for dust and water resistance, will float, and is built to withstand 5-foot drops. Wireless range reaches up to 40 metres and it supports quick one-tap Bluetooth pairing with Android devices. Two WONDERBOOM 4 units can be paired for doubled output or configured as a true left/right stereo pair. (Not compatible with WONDERBOOM 1, 2, BOOM, MEGABOOM or HYPERBOOM.)
Advantages
WONDERBOOM 4 combines compact size with pronounced bass and clear vocals thanks to a dedicated Podcast Mode and an Outdoor Boost for open-air listening. The speaker offers long battery life of up to 14 hours, robust IP67 protection so it can be used near water or in dusty conditions, and durable construction rated to survive 5-foot drops. Environmental design includes at least 31% certified post-consumer recycled plastic by weight in plastic parts.
Suitable for
Outdoor activities: beach, poolside, hiking
Home use: kitchen, shower, small gatherings
Portable listening: travel, picnics, commuting
Podcast and spoken-word playback
Key specifications
Model: Ultimate Ears WONDERBOOM 4 (Grey, Yellow)
Speaker configuration: 1 speaker with passive radiator (46.1 x 65.2 mm)
Max sound pressure level: 87 dB
Battery life: up to 14 hours
Wireless connectivity: Bluetooth, one-tap pairing with Android
Wireless range: up to 40 m
Durability: IP67 (dust and water resistant), floats, drop-tested to 5 ft
Compatibility note: does not connect with WONDERBOOM 1, 2, BOOM, MEGABOOM or HYPERBOOM
Weight: 0.42 kg
Material: includes minimum 31% certified post-consumer recycled plastic by weight in plastic parts
How to use
Charge the speaker fully using the supplied cable, then enable Bluetooth on your device and tap once to pair quickly with compatible Android phones. Press the single button to play and control pairing; to link two WONDERBOOM 4 speakers press the pairing control once to double the output and press again to activate left/right stereo mode. Use the Outdoor Boost and Podcast Mode from the device controls or companion app where available to optimise sound for outside listening or clearer vocals. Place the speaker on a stable surface and avoid blocking the passive radiator for best audio performance.
Usage recommendations
For longer outdoor sessions, keep the speaker dry when not in use and avoid prolonged submersion despite its buoyancy; to preserve battery life, reduce volume when full power is not needed. Use paired speakers for wider stereo coverage at gatherings.

## Specifications

### Design

| Feature | Value |
|---|---|
| Product colour | Grey, Yellow |
| 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 |

### 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 |

### 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 |

### 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 4 984-001897 cost, and is it available for purchase?

The price is 119.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 23 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/11346819/65799179_large.webp