Ultimate Ears 984-001878

Overview

The Ultimate Ears 984-001878 is a wireless Bluetooth speaker designed to deliver immersive 360 degree sound through dual 1.6 inch drivers and passive radiators that provide balanced audio with strong bass. It offers up to 14 hours of playback on a single charge and recharges conveniently via USB-C. Its compact size and integrated carry loop make it easy to take from room to room or on outdoor adventures, while the pink finish adds a vibrant touch to your setup.

With an IP67 rating, this speaker is dustproof, waterproof up to 1 meter for 30 minutes, and floats, making it well suited for poolside use, park outings, or any environment where spills and splashes are a concern. The Bluetooth connection supports a range of up to 131 feet and can pair with two devices simultaneously, allowing seamless switching between sources.

Key features

• 360 degree sound that fills the space evenly, thanks to dual drivers and passive radiators
• Durable IP67-rated design that resists dust and water, and floats for added outdoor versatility
• Long-lasting battery life of up to 14 hours to keep the music going throughout the day
• USB-C charging for fast and convenient power replenishment
• Outdoor Boost mode enhances volume and clarity in open-air settings
• Podcast Mode optimizes vocal clarity for spoken word content
• Wireless pairing with a second WONDERBOOM 4 speaker for stereo sound or amplified playback
• Bluetooth range up to 131 feet allows freedom of movement without losing connection
• Ability to connect to two devices at once for easy switching between phone and tablet
• Integrated carry loop simplifies transport and attachment to bags or hooks
• Eco-conscious housing made with 31 percent recycled plastic without compromising durability

Key specs

• Drivers: dual 1.6 inch
• Battery life: up to 14 hours
• Charging: USB-C
• Bluetooth range: up to 131 feet
• Waterproof rating: IP67 (waterproof up to 1 meter for 30 minutes)
• Dustproof rating: IP67
• Weight: not specified
• Dimensions: not specified
• Material: plastic housing with 31% recycled content

Connectivity and compatibility

This speaker connects wirelessly via Bluetooth, supporting a range of up to 131 feet to keep your devices connected even when you move around your home or outdoor space. It can pair with two devices simultaneously, allowing you to switch quickly between a phone and a tablet without needing to disconnect and reconnect. For enhanced sound, you can wirelessly link two WONDERBOOM 4 speakers to create stereo sound or amplify the same audio across both units.

Ideal uses and environments

The Ultimate Ears WONDERBOOM 4 fits well in a variety of settings, from casual indoor listening on a kitchen counter or dorm room to outdoor activities like pool parties, picnics, and park outings. Its waterproof and dustproof design, combined with floating capability, makes it a reliable choice for environments where water exposure or dust is a concern. The Outdoor Boost and Podcast modes allow you to tailor the sound to suit lively outdoor gatherings or focused spoken word listening, making it versatile for different audio needs.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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