Ultimate Ears BOOM 4 Wireless Bluetooth Speaker (Red)

Overview

The Ultimate Ears 984-002004 is a wireless Bluetooth speaker designed to deliver immersive 360-degree sound through two 1.6-inch full-range drivers and dual passive radiators. It produces a maximum sound level of 85 dBC, making it suitable for a variety of environments such as living rooms, outdoor gatherings, or dorm rooms. With a Bluetooth range of up to 147 feet, it easily connects to phones, tablets, and laptops, supporting two devices simultaneously for seamless music sharing or multitasking between devices.

Built to withstand real-life conditions, this speaker features an IP67 rating for dust and water resistance, floats on water, and can survive drops from up to 15 feet. Its rechargeable lithium-ion battery offers up to 15 hours of playtime, and USB-C charging fully replenishes the battery in about three hours. The Magic Button provides convenient one-touch control over playback and playlists, enhancing usability when your device is out of reach.

Key features

• 360-degree sound coverage ensures consistent audio quality throughout the room or outdoor space
• Dual passive radiators enhance bass response for richer, fuller sound
• Supports simultaneous connection of two Bluetooth devices for easy switching between playlists or calls
• IP67 rating guarantees protection against dust and water, allowing use by pools, beaches, or kitchens
• Floats on water, adding safety and convenience for aquatic environments
• Drop-resistant design withstands falls from up to 15 feet, ideal for active lifestyles and travel
• Magic Button offers quick access to playback controls without needing to unlock your device
• Four preset EQ modes plus customizable EQ via the app let you tailor sound to different content and environments
• PartyUp feature enables linking multiple Ultimate Ears speakers to amplify sound across larger areas or multiple rooms
• Constructed with at least 52% post-consumer recycled plastic, combining durability with environmental responsibility

Key specs

• Drivers: Two 1.6-inch full-range drivers
• Sound level: Maximum 85 dBC
• Bluetooth range: Up to 147 feet
• Battery life: Up to 15 hours per full charge
• Charging: USB-C, approximately 3 hours for full charge
• Water and dust resistance: IP67 rating
• Drop resistance: Up to 15 feet
• Material: Minimum 52% post-consumer recycled plastic

Connectivity and compatibility

This speaker pairs effortlessly with a wide range of Bluetooth-enabled devices including smartphones, tablets, and laptops. The ability to maintain connections with two devices simultaneously makes it convenient for users who switch between work and leisure audio sources. The PartyUp feature expands compatibility by allowing multiple Ultimate Ears speakers to connect, creating a synchronized audio experience across larger spaces.

Ideal uses and environments

Thanks to its rugged design and waterproof capabilities, this speaker fits well in outdoor settings such as parks, beaches, and poolside areas. It also performs reliably indoors, whether in a home office, dorm room, or kitchen. The long battery life and robust wireless range support extended use during social gatherings, work sessions, or casual listening. Its vivid red finish adds a splash of color that stands out in any environment.