Ultimate Ears BOOM 4 Wireless Bluetooth Speaker (Black)

Overview

The Ultimate Ears 984-001963 is a wireless Bluetooth speaker designed to deliver immersive 360-degree sound with two 1.6-inch full-range drivers and dual passive radiators. It produces a maximum output of 85 dBC, providing lively and consistent audio whether used indoors or outdoors. Its durable black finish and IP67 rating make it waterproof, dustproof, and able to float, while also withstanding drops from up to 15 feet, making it a reliable companion for a variety of environments.

Key features

• 360-degree sound that fills the room evenly, ensuring clear audio from any angle
• Long-lasting battery life of up to 15 hours, supporting extended listening without interruption
• Bluetooth connectivity with a wireless range of up to 147 feet, allowing flexible placement away from your device
• IP67 rating for waterproof and dustproof protection, plus the ability to float on water for worry-free outdoor use
• Drop resistance up to 15 feet, providing durability against accidental falls and rough handling
• PartyUp feature to wirelessly link multiple compatible Ultimate Ears speakers for a larger sound experience
• Magic Button for quick, one-touch control of playback and playlists without needing to access your phone
• Constructed with 52% post-consumer recycled plastic, combining sustainability with robust design

Key specs

• Drivers: two 1.6-inch full-range drivers
• Output: maximum 85 dBC
• Battery life: up to 15 hours per charge
• Recharge time: approximately 3 hours
• Bluetooth range: up to 147 feet
• Durability rating: IP67 waterproof and dustproof
• Drop resistance: up to 15 feet
• Material: 52% post-consumer recycled plastic

Connectivity and compatibility

This speaker connects seamlessly via Bluetooth, offering a strong wireless range that lets you place it where the sound is best without keeping your phone nearby. The PartyUp feature expands your audio setup by linking with other Ultimate Ears models such as BOOM, MEGABOOM, EVERBOOM, EPICBOOM, and HYPERBOOM, making it easy to create a multi-speaker environment for larger gatherings or more immersive sound.

Ideal uses and environments

Thanks to its rugged build and waterproof design, this speaker works well in a variety of settings including home living rooms, outdoor patios, poolside parties, and weekend trips. Its long battery life and durable construction make it a strong choice for users who want reliable, high-quality sound during picnics, beach days, or casual get-togethers. The Magic Button adds convenience for quick control, fitting naturally into active lifestyles where ease of use matters.