JumboBass™ Technology
Custom rectangular woofers provide an increased diaphragm surface area, delivering thundering low frequencies down to 38Hz without midrange distortion.




80W High-Power Outdoor Portable Bluetooth 5.3 Speaker with JumboBass™ Acoustic Technology
Engineered for international audio distributors, consumer electronics retailers, and regional brand partners. The UBOOM® X combines premium acoustic hardware, certified weatherproofing, and competitive manufacturing standards to maximize category profitability.
EarFun's acoustic R&D team combines patented sound enhancements with industrial-grade outdoor protection.
Custom rectangular woofers provide an increased diaphragm surface area, delivering thundering low frequencies down to 38Hz without midrange distortion.
Certified IP67 dustproof and waterproof design with floatable construction and rustproof SweatShield™ protection for pool, marine, and beach use.
Heavy-duty 8400mAh battery pack supports up to 30 hours of continuous playback and dual-way USB-C charging to power mobile devices on the go.
Pre-tuned studio sound profiles balanced across all volume levels, complemented by a 10-band customizable equalizer in the official EarFun Audio App.
TWS stereo pairing capability allows users to link two units for discrete L/R stereo or synchronize up to 50 speakers for large-scale outdoor venues.
Customizable LED illumination syncs rhythmically to audio playback, controllable directly via dedicated hardware keys or mobile app settings.
Evaluated and honored by prestigious international design juries and leading technology media outlets.






The Bluetooth speaker EarFun UBOOM X makes an extremely robust impression with its sturdy carry handle and clear, expansive shapes.— Red Dot Award Jury 2024
If you are looking for a high-performance portable boombox speaker on a reasonable budget, the EarFun UBOOM X delivers solid stereo audio, custom EQ profiles, and outstanding battery backup.— SoundGuys Review
EarFun offers a powerful outdoor speaker with its UBOOM X. High volume ceiling, balanced bass response, and ultra-rugged construction make it a category standout.— Francois Charron
Detailed hardware parameters for procurement verification and category management.
| Feature Specification | Technical Detail |
|---|---|
| Model Name | EarFun UBOOM® X (Model: SP500B) |
| Audio Architecture | 80W Output (2× 4-inch Woofers + 2× 20mm Silk Dome Tweeters) |
| Wireless Connectivity | Bluetooth V5.3 (2.402GHz - 2.480GHz) |
| Bluetooth Profiles & Codecs | A2DP, AVRCP, HFP, HSP (SBC/AAC supported) |
| Effective Working Range | Up to 15 meters / 50 feet (without obstacles) |
| Battery Capacity & Voltage | 7.2V, 8400mAh High-Density Li-ion Pack |
| Playback Duration | Up to 30 Hours (varies depending on volume level and audio spectrum) |
| Charging System | USB-C 30W Fast Charging Input (20V/3A Max), Power Bank Output (5V/2A Max) |
| Waterproof / Dustproof Rating | Certified IP67 (Dustproof, Waterproof, Floatable design) |
| Dimensions & Net Weight | 400mm × 150mm × 217mm | Net Weight: 4.15 kg (9.15 lbs) |
Reliable production capacity, international market compliance, and complete post-sales warranty infrastructure to back your wholesale strategy.
Patented JumboBass™, DCAA™, QuietSmart™, and SweatShield™ technologies give distributors strong marketing protection and unique selling propositions.
Full CE, FCC, RoHS, PSE, and TELEC certifications ensuring smooth customs clearance and market compliance in North America, EU, UK, and APAC.
Dedicated B2B tier pricing for regional distributors, e-commerce retailers, and corporate gifting programs with scalable OEM/ODM fulfillment.
Comprehensive warranty processing and technical customer service centers reduce return burdens for international commercial partners.
Key technical and commercial details regarding the EarFun UBOOM® X portable Bluetooth speaker.
The UBOOM® X utilizes an 80W quad-driver system comprising dual 4-inch woofers with rectangular diaphragms and two 20mm silk dome tweeters. Driven by proprietary JumboBass™ technology, it delivers deep bass notes down to 38Hz alongside clean treble dispersion.
The speaker is certified completely dust-tight and waterproof when submerged in up to 1 meter of water for 30 minutes. It features a floatable structure and anti-corrosion SweatShield™ coating, making it resistant to sand, mud, and saltwater environments.
Yes. Users can pair two UBOOM® X units via True Wireless Stereo (TWS) mode for discrete left and right channel output. Furthermore, Party Connect mode enables wireless synchronization of up to 50 compatible speakers simultaneously.
Yes. The UBOOM® X houses a 7.2V 8400mAh battery pack equipped with a USB-C charging output port (5V/2A max) to recharge smartphones, cameras, or wireless earbuds while outdoors.
All EarFun products come backed by an 18-month warranty. The UBOOM® X holds international certifications including CE, FCC, RoHS, and TELEC, ready for immediate retail import and global commercial distribution.