The Ultimate Ears BOOM 4 is your go-anywhere portable Bluetooth speaker engineered for bold 360° sound and rugged performance. With two 40mm active drivers and dual passive radiators, it pumps out rich, room-filling audio with a maximum sound level of 85 dBC. Whether you're at the beach, park, or chilling at home, its rechargeable battery delivers up to 15 hours of non-stop playtime. With a wireless range up to 147 feet and support for smartphones, tablets, and other Bluetooth-enabled devices, this speaker keeps the vibes alive. Crafted with at least 52% post-consumer recycled plastic, the BOOM 4 is both eco-friendly and engineered to last.
| Dimensions (in) | 7.24 x 2.9 x 2.9 in |
| Weight | 620 g / 21.87 oz |
| Maximum Sound Level | 85 dBC |
| Drivers | 2 × 40 mm active drivers, 2 × 46.1 x 65.2 mm passive radiators |
| Sound Output | 360° Sound |
| Battery Life | Up to 15 hours |
| Wireless Range | Up to 147 feet (45 meters) |
| Compatibility | Bluetooth A2DP-enabled devices (smartphones, tablets, etc.) |
| Bluetooth Profile | A2DP |
| Sustainability | Min. 52% Post-Consumer Recycled Plastic (excluding packaging) |
- 360° immersive sound with rich bass
- Up to 15 hours of wireless playtime
- 147 ft (45 m) Bluetooth range
- Eco-friendly: 52% recycled plastic construction
CONDITION - Unless stated in the product title, all devices are brand new. We do sell a small quantity of refurbished items but these all have a product title that begins with 'Refurbished'. As part of our QC process, retail package seals may have been opened to perform quality, testing and/or unlock functions however unless specified all devices are new and unused.
WARRANTY - All new devices come with our comprehensive 12 month warranty, which is included in the standard purchase price. We'll even replace with a new item if yours cannot be repaired. Refurbished items (marked as such in the product description) come with a 6 month warranty with refurbished replacement items.
PAYMENT METHODS - We accept Credit Card and PayPal for outright purchases. Though we also offer zipMoney for convenient repayments over time handled by zipMoney. Direct bank deposit is available to wholesale orders only, please get in touch with our CS team for further information.
RETURNS - All orders are liable to a discretional change of mind return fee. For more information please read our returns policy. We also offer a new replacement policy for items that cannot be repaired.
SECURITY - Our shopping cart meets the strictest PCI requirements and is audited daily. We do not store any customer payment information and our servers are protected using Digicert's SHA2 High Assurance SSL.
OUR STOCK - Products sold through this store are unlocked, never locked or SIM-free. They offer the best combination of price and quality and can be sourced from international markets via parallel importation. Please check the network bands with your provider to ensure full compatibility. In some instances printed documentation may not be in English, even though the device is compatible with local network bands. Where this occurs and you require user manuals etc please contact us and we will provide a digital copy.
DISCLAIMER - Due to variations in stock and regional sourcing we cannot guarantee that all specifications listed are 100% correct at all times as the same model may be available in several variants. If you have any specific requirements please raise them with our team and they will provide availability on the model you require.
