Ultimate Ears BOOM 4 Wireless Bluetooth Speaker (Purple/Lilac)

Overview

The Ultimate Ears 984-002009 is a wireless Bluetooth speaker designed to deliver immersive 360 degree sound with a maximum volume of 85 dBC. Its compact cylindrical shape and vibrant purple/lilac finish make it both stylish and portable. With two 1.6 inch drivers and dual passive radiators, it projects clear audio in every direction, making it suitable for outdoor adventures, casual listening, and social gatherings.

Built to withstand real-life conditions, this speaker carries an IP67 rating, ensuring it is fully protected against water and dust. It even floats if dropped in water and can survive falls from up to 15 feet, making it a reliable companion for beach days, camping trips, and backyard parties.

Key features

• 360 degree sound projection that fills the space evenly for music and podcasts
• Bluetooth connectivity with a range up to 147 feet, allowing flexible placement and device pairing
• Simultaneous connection of two devices for easy switching between playlists or users
• Magic Button for one-touch playback and quick access to favorite playlists without needing your phone
• Long-lasting rechargeable battery providing up to 15 hours of continuous playtime on a single charge
• USB-C charging that refuels the battery in about 3 hours for minimal downtime
• PartyUp feature enables pairing with multiple compatible speakers to amplify sound for larger gatherings
• Durable design with IP67 water and dust resistance and drop protection up to 15 feet
• Constructed with at least 52 percent post-consumer recycled plastic, combining sustainability with durability

Key specs

• Drivers: two 1.6 inch drivers with dual passive radiators
• Maximum sound level: 85 dBC
• Bluetooth range: up to 147 feet
• Battery life: up to 15 hours per charge
• Charging time: approximately 3 hours via USB-C
• Water and dust resistance: IP67 rating
• Drop resistance: up to 15 feet
• Material: minimum 52 percent post-consumer recycled plastic

Connectivity and compatibility

This speaker pairs effortlessly with smartphones, tablets, and laptops via Bluetooth, supporting a generous wireless range that lets you move freely without losing connection. The ability to connect two devices simultaneously means you can easily switch between your phone and another device, or share control with a friend. The Magic Button simplifies playback control, reducing the need to interact with your device during use.

Ideal uses and environments

Thanks to its rugged build and water resistance, this speaker fits well in outdoor settings like beaches, poolsides, and campsites where exposure to elements is common. Its 15-hour battery life covers extended outings or all-day events without needing a recharge. The PartyUp feature makes it a strong choice for social gatherings where you want to boost sound coverage by linking multiple speakers. It also works well indoors for casual listening or small parties.