ID Patent:201530252173.8 Utility Patent:201520506811.9 The 1A-HiFi-3D Speaker is Designed and Engineered by DiPRO Acoustics, A 9 Years Audio Producer. HiFi Music & Audio-books S Type Patent Acoustic Duct delivers natural, authentic vocals; it's perfect for HiFi Music enjoyment and Audio-books listening. Built-in DSP 3D-Surround Sound With 2 X 15W Speaker Amplifier, 10W dual acoustic drivers provide really big sound, what's more is that built-in DSP provide 3D-Surround Sound for Movie Enjoyment. You have 2in1 Bluetooth Speaker with a HiFi Music Brick and a Theater-effect Portable Speaker. Charging & Play Time 7.4V 2200mAh Lithium battery from International top Brand supplier allows your speaker up to 8 hours music play by maximum(5 movies), up to 20 hours music play by 70% volume(300 songs). You could charge it with any free computer USB Port or 5V 1~ 2A adaptor. Magnetically Shielded Speakers rely on powerful magnets to reproduce the sound, and sometimes those speaker magnets can potentially interfere with or damage other A/V components when placed too near to these devices. All of the speakers in the 1A-HiFi 3D system have been magnetically shielded, preventing damage and helping to ensure optimal performance as well as allowing for versatile placement.
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